content/browser/service_worker/service_worker_version.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/service_worker/service_worker_version.h"
   6
   7 #include <map>
   8 #include <string>
   9
  10 #include "base/command_line.h"
  11 #include "base/guid.h"
  12 #include "base/location.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "base/metrics/histogram_macros.h"
  15 #include "base/single_thread_task_runner.h"
  16 #include "base/stl_util.h"
  17 #include "base/strings/string16.h"
  18 #include "base/strings/utf_string_conversions.h"
  19 #include "base/thread_task_runner_handle.h"
  20 #include "base/time/time.h"
  21 #include "content/browser/bad_message.h"
  22 #include "content/browser/child_process_security_policy_impl.h"
  23 #include "content/browser/message_port_message_filter.h"
  24 #include "content/browser/message_port_service.h"
  25 #include "content/browser/service_worker/embedded_worker_instance.h"
  26 #include "content/browser/service_worker/embedded_worker_registry.h"
  27 #include "content/browser/service_worker/service_worker_context_core.h"
  28 #include "content/browser/service_worker/service_worker_context_wrapper.h"
  29 #include "content/browser/service_worker/service_worker_metrics.h"
  30 #include "content/browser/service_worker/service_worker_registration.h"
  31 #include "content/browser/service_worker/service_worker_utils.h"
  32 #include "content/browser/storage_partition_impl.h"
  33 #include "content/common/service_worker/service_worker_messages.h"
  34 #include "content/common/service_worker/service_worker_type_converters.h"
  35 #include "content/public/browser/browser_thread.h"
  36 #include "content/public/browser/content_browser_client.h"
  37 #include "content/public/browser/page_navigator.h"
  38 #include "content/public/browser/render_frame_host.h"
  39 #include "content/public/browser/render_process_host.h"
  40 #include "content/public/browser/web_contents.h"
  41 #include "content/public/browser/web_contents_observer.h"
  42 #include "content/public/common/background_sync.mojom.h"
  43 #include "content/public/common/child_process_host.h"
  44 #include "content/public/common/content_client.h"
  45 #include "content/public/common/content_switches.h"
  46 #include "content/public/common/result_codes.h"
  47 #include "content/public/common/service_registry.h"
  48 #include "mojo/common/common_type_converters.h"
  49 #include "mojo/common/url_type_converters.h"
  50 #include "net/http/http_response_headers.h"
  51 #include "net/http/http_response_info.h"
  52
  53 namespace content {
  54
  55 using StatusCallback = ServiceWorkerVersion::StatusCallback;
  56 using ServiceWorkerClients = std::vector<ServiceWorkerClientInfo>;
  57 using GetClientsCallback =
  58     base::Callback<void(scoped_ptr<ServiceWorkerClients>)>;
  59
  60 namespace {
  61
  62 // Delay between the timeout timer firing.
  63 const int kTimeoutTimerDelaySeconds = 30;
  64
  65 // Time to wait until stopping an idle worker.
  66 const int kIdleWorkerTimeoutSeconds = 30;
  67
  68 // Time until a stopping worker is considered stalled.
  69 const int kStopWorkerTimeoutSeconds = 30;
  70
  71 // Default delay for scheduled update.
  72 const int kUpdateDelaySeconds = 1;
  73
  74 // Timeout for waiting for a response to a ping.
  75 const int kPingTimeoutSeconds = 30;
  76
  77 // If the SW was destructed while starting up, how many seconds it
  78 // had to start up for this to be considered a timeout occurrence.
  79 const int kDestructedStartingWorkerTimeoutThresholdSeconds = 5;
  80
  81 const char kClaimClientsStateErrorMesage[] =
  82     "Only the active worker can claim clients.";
  83
  84 const char kClaimClientsShutdownErrorMesage[] =
  85     "Failed to claim clients due to Service Worker system shutdown.";
  86
  87 void RunSoon(const base::Closure& callback) {
  88   if (!callback.is_null())
  89     base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, callback);
  90 }
  91
  92 template <typename CallbackArray, typename Arg>
  93 void RunCallbacks(ServiceWorkerVersion* version,
  94                   CallbackArray* callbacks_ptr,
  95                   const Arg& arg) {
  96   CallbackArray callbacks;
  97   callbacks.swap(*callbacks_ptr);
  98   scoped_refptr<ServiceWorkerVersion> protect(version);
  99   for (const auto& callback : callbacks)
 100     callback.Run(arg);
 101 }
 102
 103 template <typename IDMAP, typename... Params>
 104 void RunIDMapCallbacks(IDMAP* requests, const Params&... params) {
 105   typename IDMAP::iterator iter(requests);
 106   while (!iter.IsAtEnd()) {
 107     iter.GetCurrentValue()->callback.Run(params...);
 108     iter.Advance();
 109   }
 110   requests->Clear();
 111 }
 112
 113 template <typename CallbackType, typename... Params>
 114 bool RunIDMapCallback(IDMap<CallbackType, IDMapOwnPointer>* requests,
 115                       int request_id,
 116                       const Params&... params) {
 117   CallbackType* request = requests->Lookup(request_id);
 118   if (!request)
 119     return false;
 120
 121   request->callback.Run(params...);
 122   requests->Remove(request_id);
 123   return true;
 124 }
 125
 126 void RunStartWorkerCallback(
 127     const StatusCallback& callback,
 128     scoped_refptr<ServiceWorkerRegistration> protect,
 129     ServiceWorkerStatusCode status) {
 130   callback.Run(status);
 131 }
 132
 133 // A callback adapter to start a |task| after StartWorker.
 134 void RunTaskAfterStartWorker(
 135     base::WeakPtr<ServiceWorkerVersion> version,
 136     const StatusCallback& error_callback,
 137     const base::Closure& task,
 138     ServiceWorkerStatusCode status) {
 139   if (status != SERVICE_WORKER_OK) {
 140     if (!error_callback.is_null())
 141       error_callback.Run(status);
 142     return;
 143   }
 144   if (version->running_status() != ServiceWorkerVersion::RUNNING) {
 145     // We've tried to start the worker (and it has succeeded), but
 146     // it looks it's not running yet.
 147     NOTREACHED() << "The worker's not running after successful StartWorker";
 148     if (!error_callback.is_null())
 149       error_callback.Run(SERVICE_WORKER_ERROR_START_WORKER_FAILED);
 150     return;
 151   }
 152   task.Run();
 153 }
 154
 155 void RunErrorFetchCallback(const ServiceWorkerVersion::FetchCallback& callback,
 156                            ServiceWorkerStatusCode status) {
 157   callback.Run(status,
 158                SERVICE_WORKER_FETCH_EVENT_RESULT_FALLBACK,
 159                ServiceWorkerResponse());
 160 }
 161
 162 void RunErrorMessageCallback(
 163     const std::vector<TransferredMessagePort>& sent_message_ports,
 164     const ServiceWorkerVersion::StatusCallback& callback,
 165     ServiceWorkerStatusCode status) {
 166   // Transfering the message ports failed, so destroy the ports.
 167   for (const TransferredMessagePort& port : sent_message_ports) {
 168     MessagePortService::GetInstance()->ClosePort(port.id);
 169   }
 170   callback.Run(status);
 171 }
 172
 173 void RunErrorServicePortConnectCallback(
 174     const ServiceWorkerVersion::ServicePortConnectCallback& callback,
 175     ServiceWorkerStatusCode status) {
 176   callback.Run(status, false /* accept_connection */, base::string16(),
 177                base::string16());
 178 }
 179
 180 using OpenURLCallback = base::Callback<void(int, int)>;
 181
 182 // The OpenURLObserver class is a WebContentsObserver that will wait for a
 183 // WebContents to be initialized, run the |callback| passed to its constructor
 184 // then self destroy.
 185 // The callback will receive the process and frame ids. If something went wrong
 186 // those will be (kInvalidUniqueID, MSG_ROUTING_NONE).
 187 // The callback will be called in the IO thread.
 188 class OpenURLObserver : public WebContentsObserver {
 189  public:
 190   OpenURLObserver(WebContents* web_contents, const OpenURLCallback& callback)
 191       : WebContentsObserver(web_contents), callback_(callback) {}
 192
 193   void DidCommitProvisionalLoadForFrame(
 194       RenderFrameHost* render_frame_host,
 195       const GURL& validated_url,
 196       ui::PageTransition transition_type) override {
 197     DCHECK(web_contents());
 198
 199     if (render_frame_host != web_contents()->GetMainFrame())
 200       return;
 201
 202     RunCallback(render_frame_host->GetProcess()->GetID(),
 203                 render_frame_host->GetRoutingID());
 204   }
 205
 206   void RenderProcessGone(base::TerminationStatus status) override {
 207     RunCallback(ChildProcessHost::kInvalidUniqueID, MSG_ROUTING_NONE);
 208   }
 209
 210   void WebContentsDestroyed() override {
 211     RunCallback(ChildProcessHost::kInvalidUniqueID, MSG_ROUTING_NONE);
 212   }
 213
 214  private:
 215   void RunCallback(int render_process_id, int render_frame_id) {
 216     // After running the callback, |this| will stop observing, thus
 217     // web_contents() should return nullptr and |RunCallback| should no longer
 218     // be called. Then, |this| will self destroy.
 219     DCHECK(web_contents());
 220
 221     BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
 222                             base::Bind(callback_,
 223                                        render_process_id,
 224                                        render_frame_id));
 225     Observe(nullptr);
 226     base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
 227   }
 228
 229   const OpenURLCallback callback_;
 230
 231   DISALLOW_COPY_AND_ASSIGN(OpenURLObserver);
 232 };
 233
 234 void DidOpenURL(const OpenURLCallback& callback, WebContents* web_contents) {
 235   DCHECK(web_contents);
 236
 237   new OpenURLObserver(web_contents, callback);
 238 }
 239
 240 void NavigateClientOnUI(const GURL& url,
 241                         const GURL& script_url,
 242                         int process_id,
 243                         int frame_id,
 244                         const OpenURLCallback& callback) {
 245   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 246
 247   RenderFrameHost* render_frame_host =
 248       RenderFrameHost::FromID(process_id, frame_id);
 249   WebContents* web_contents =
 250       WebContents::FromRenderFrameHost(render_frame_host);
 251
 252   if (!render_frame_host || !web_contents) {
 253     BrowserThread::PostTask(
 254         BrowserThread::IO, FROM_HERE,
 255         base::Bind(callback, ChildProcessHost::kInvalidUniqueID,
 256                    MSG_ROUTING_NONE));
 257     return;
 258   }
 259
 260   OpenURLParams params(
 261       url, Referrer::SanitizeForRequest(
 262                url, Referrer(script_url, blink::WebReferrerPolicyDefault)),
 263       CURRENT_TAB, ui::PAGE_TRANSITION_AUTO_TOPLEVEL,
 264       true /* is_renderer_initiated */);
 265   web_contents->OpenURL(params);
 266   DidOpenURL(callback, web_contents);
 267 }
 268
 269 void OpenWindowOnUI(
 270     const GURL& url,
 271     const GURL& script_url,
 272     int process_id,
 273     const scoped_refptr<ServiceWorkerContextWrapper>& context_wrapper,
 274     const OpenURLCallback& callback) {
 275   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 276
 277   BrowserContext* browser_context = context_wrapper->storage_partition()
 278       ? context_wrapper->storage_partition()->browser_context()
 279       : nullptr;
 280   // We are shutting down.
 281   if (!browser_context)
 282     return;
 283
 284   RenderProcessHost* render_process_host =
 285       RenderProcessHost::FromID(process_id);
 286   if (render_process_host->IsForGuestsOnly()) {
 287     BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
 288                             base::Bind(callback,
 289                                        ChildProcessHost::kInvalidUniqueID,
 290                                        MSG_ROUTING_NONE));
 291     return;
 292   }
 293
 294   OpenURLParams params(
 295       url, Referrer::SanitizeForRequest(
 296                url, Referrer(script_url, blink::WebReferrerPolicyDefault)),
 297       NEW_FOREGROUND_TAB, ui::PAGE_TRANSITION_AUTO_TOPLEVEL,
 298       true /* is_renderer_initiated */);
 299
 300   GetContentClient()->browser()->OpenURL(
 301       browser_context, params,
 302       base::Bind(&DidOpenURL, callback));
 303 }
 304
 305 void KillEmbeddedWorkerProcess(int process_id, ResultCode code) {
 306   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 307   RenderProcessHost* render_process_host =
 308       RenderProcessHost::FromID(process_id);
 309   if (render_process_host->GetHandle() != base::kNullProcessHandle) {
 310     bad_message::ReceivedBadMessage(render_process_host,
 311                                     bad_message::SERVICE_WORKER_BAD_URL);
 312   }
 313 }
 314
 315 void ClearTick(base::TimeTicks* time) {
 316   *time = base::TimeTicks();
 317 }
 318
 319 void RestartTick(base::TimeTicks* time) {
 320   *time = base::TimeTicks().Now();
 321 }
 322
 323 base::TimeDelta GetTickDuration(const base::TimeTicks& time) {
 324   if (time.is_null())
 325     return base::TimeDelta();
 326   return base::TimeTicks().Now() - time;
 327 }
 328
 329 void OnGetWindowClientsFromUI(
 330     // The tuple contains process_id, frame_id, client_uuid.
 331     const std::vector<base::Tuple<int, int, std::string>>& clients_info,
 332     const GURL& script_url,
 333     const GetClientsCallback& callback) {
 334   scoped_ptr<ServiceWorkerClients> clients(new ServiceWorkerClients);
 335
 336   for (const auto& it : clients_info) {
 337     ServiceWorkerClientInfo info =
 338         ServiceWorkerProviderHost::GetWindowClientInfoOnUI(base::get<0>(it),
 339                                                            base::get<1>(it));
 340
 341     // If the request to the provider_host returned an empty
 342     // ServiceWorkerClientInfo, that means that it wasn't possible to associate
 343     // it with a valid RenderFrameHost. It might be because the frame was killed
 344     // or navigated in between.
 345     if (info.IsEmpty())
 346       continue;
 347
 348     // We can get info for a frame that was navigating end ended up with a
 349     // different URL than expected. In such case, we should make sure to not
 350     // expose cross-origin WindowClient.
 351     if (info.url.GetOrigin() != script_url.GetOrigin())
 352       continue;
 353
 354     info.client_uuid = base::get<2>(it);
 355     clients->push_back(info);
 356   }
 357
 358   BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
 359                           base::Bind(callback, base::Passed(&clients)));
 360 }
 361
 362 void AddWindowClient(
 363     ServiceWorkerProviderHost* host,
 364     std::vector<base::Tuple<int, int, std::string>>* client_info) {
 365   if (host->client_type() != blink::WebServiceWorkerClientTypeWindow)
 366     return;
 367   client_info->push_back(base::MakeTuple(host->process_id(), host->frame_id(),
 368                                          host->client_uuid()));
 369 }
 370
 371 void AddNonWindowClient(ServiceWorkerProviderHost* host,
 372                         const ServiceWorkerClientQueryOptions& options,
 373                         ServiceWorkerClients* clients) {
 374   blink::WebServiceWorkerClientType host_client_type = host->client_type();
 375   if (host_client_type == blink::WebServiceWorkerClientTypeWindow)
 376     return;
 377   if (options.client_type != blink::WebServiceWorkerClientTypeAll &&
 378       options.client_type != host_client_type)
 379     return;
 380
 381   ServiceWorkerClientInfo client_info(
 382       blink::WebPageVisibilityStateHidden,
 383       false,  // is_focused
 384       host->document_url(), REQUEST_CONTEXT_FRAME_TYPE_NONE, host_client_type);
 385   client_info.client_uuid = host->client_uuid();
 386   clients->push_back(client_info);
 387 }
 388
 389 bool IsInstalled(ServiceWorkerVersion::Status status) {
 390   switch (status) {
 391     case ServiceWorkerVersion::NEW:
 392     case ServiceWorkerVersion::INSTALLING:
 393     case ServiceWorkerVersion::REDUNDANT:
 394       return false;
 395     case ServiceWorkerVersion::INSTALLED:
 396     case ServiceWorkerVersion::ACTIVATING:
 397     case ServiceWorkerVersion::ACTIVATED:
 398       return true;
 399   }
 400   NOTREACHED() << "Unexpected status: " << status;
 401   return false;
 402 }
 403
 404 }  // namespace
 405
 406 const int ServiceWorkerVersion::kStartWorkerTimeoutMinutes = 5;
 407 const int ServiceWorkerVersion::kRequestTimeoutMinutes = 5;
 408
 409 class ServiceWorkerVersion::Metrics {
 410  public:
 411   using EventType = ServiceWorkerMetrics::EventType;
 412   explicit Metrics(ServiceWorkerVersion* owner) : owner_(owner) {}
 413   ~Metrics() {
 414     for (const auto& ev : event_stats_) {
 415       ServiceWorkerMetrics::RecordEventHandledRatio(owner_->scope(), ev.first,
 416                                                     ev.second.handled_events,
 417                                                     ev.second.fired_events);
 418     }
 419   }
 420
 421   void RecordEventHandledStatus(EventType event, bool handled) {
 422     event_stats_[event].fired_events++;
 423     if (handled)
 424       event_stats_[event].handled_events++;
 425   }
 426
 427   void NotifyStopping() {
 428     stop_status_ = ServiceWorkerMetrics::STOP_STATUS_STOPPING;
 429   }
 430
 431   void NotifyStopped() {
 432     switch (stop_status_) {
 433       case ServiceWorkerMetrics::STOP_STATUS_STOPPED:
 434       case ServiceWorkerMetrics::STOP_STATUS_STALLED_THEN_STOPPED:
 435         return;
 436       case ServiceWorkerMetrics::STOP_STATUS_STOPPING:
 437         stop_status_ = ServiceWorkerMetrics::STOP_STATUS_STOPPED;
 438         break;
 439       case ServiceWorkerMetrics::STOP_STATUS_STALLED:
 440         stop_status_ = ServiceWorkerMetrics::STOP_STATUS_STALLED_THEN_STOPPED;
 441         break;
 442       case ServiceWorkerMetrics::NUM_STOP_STATUS_TYPES:
 443         NOTREACHED();
 444         return;
 445     }
 446     if (IsInstalled(owner_->status()))
 447       ServiceWorkerMetrics::RecordStopWorkerStatus(stop_status_);
 448   }
 449
 450   void NotifyStalledInStopping() {
 451     if (stop_status_ != ServiceWorkerMetrics::STOP_STATUS_STOPPING)
 452       return;
 453     stop_status_ = ServiceWorkerMetrics::STOP_STATUS_STALLED;
 454     if (IsInstalled(owner_->status()))
 455       ServiceWorkerMetrics::RecordStopWorkerStatus(stop_status_);
 456   }
 457
 458  private:
 459   struct EventStat {
 460     size_t fired_events = 0;
 461     size_t handled_events = 0;
 462   };
 463
 464   ServiceWorkerVersion* owner_;
 465   std::map<EventType, EventStat> event_stats_;
 466   ServiceWorkerMetrics::StopWorkerStatus stop_status_ =
 467       ServiceWorkerMetrics::STOP_STATUS_STOPPING;
 468
 469   DISALLOW_COPY_AND_ASSIGN(Metrics);
 470 };
 471
 472 // A controller for periodically sending a ping to the worker to see
 473 // if the worker is not stalling.
 474 class ServiceWorkerVersion::PingController {
 475  public:
 476   explicit PingController(ServiceWorkerVersion* version) : version_(version) {}
 477   ~PingController() {}
 478
 479   void Activate() { ping_state_ = PINGING; }
 480
 481   void Deactivate() {
 482     ClearTick(&ping_time_);
 483     ping_state_ = NOT_PINGING;
 484   }
 485
 486   void OnPongReceived() { ClearTick(&ping_time_); }
 487
 488   bool IsTimedOut() { return ping_state_ == PING_TIMED_OUT; }
 489
 490   // Checks ping status. This is supposed to be called periodically.
 491   // This may call:
 492   // - OnPingTimeout() if the worker hasn't reponded within a certain period.
 493   // - PingWorker() if we're running ping timer and can send next ping.
 494   void CheckPingStatus() {
 495     if (GetTickDuration(ping_time_) >
 496         base::TimeDelta::FromSeconds(kPingTimeoutSeconds)) {
 497       ping_state_ = PING_TIMED_OUT;
 498       version_->OnPingTimeout();
 499       return;
 500     }
 501
 502     // Check if we want to send a next ping.
 503     if (ping_state_ != PINGING || !ping_time_.is_null())
 504       return;
 505
 506     if (version_->PingWorker() != SERVICE_WORKER_OK) {
 507       // TODO(falken): Maybe try resending Ping a few times first?
 508       ping_state_ = PING_TIMED_OUT;
 509       version_->OnPingTimeout();
 510       return;
 511     }
 512     RestartTick(&ping_time_);
 513   }
 514
 515   void SimulateTimeoutForTesting() {
 516     version_->PingWorker();
 517     ping_state_ = PING_TIMED_OUT;
 518     version_->OnPingTimeout();
 519   }
 520
 521  private:
 522   enum PingState { NOT_PINGING, PINGING, PING_TIMED_OUT };
 523   ServiceWorkerVersion* version_;  // Not owned.
 524   base::TimeTicks ping_time_;
 525   PingState ping_state_ = NOT_PINGING;
 526   DISALLOW_COPY_AND_ASSIGN(PingController);
 527 };
 528
 529 ServiceWorkerVersion::ServiceWorkerVersion(
 530     ServiceWorkerRegistration* registration,
 531     const GURL& script_url,
 532     int64 version_id,
 533     base::WeakPtr<ServiceWorkerContextCore> context)
 534     : version_id_(version_id),
 535       registration_id_(registration->id()),
 536       script_url_(script_url),
 537       scope_(registration->pattern()),
 538       context_(context),
 539       script_cache_map_(this, context),
 540       ping_controller_(new PingController(this)),
 541       weak_factory_(this) {
 542   DCHECK(context_);
 543   DCHECK(registration);
 544   context_->AddLiveVersion(this);
 545   embedded_worker_ = context_->embedded_worker_registry()->CreateWorker();
 546   embedded_worker_->AddListener(this);
 547 }
 548
 549 ServiceWorkerVersion::~ServiceWorkerVersion() {
 550   // The user may have closed the tab waiting for SW to start up.
 551   if (GetTickDuration(start_time_) >
 552       base::TimeDelta::FromSeconds(
 553           kDestructedStartingWorkerTimeoutThresholdSeconds)) {
 554     DCHECK(timeout_timer_.IsRunning());
 555     DCHECK(!embedded_worker_->devtools_attached());
 556     RecordStartWorkerResult(SERVICE_WORKER_ERROR_TIMEOUT);
 557   }
 558
 559   // Same with stopping.
 560   if (GetTickDuration(stop_time_) >
 561       base::TimeDelta::FromSeconds(kStopWorkerTimeoutSeconds)) {
 562     metrics_->NotifyStalledInStopping();
 563   }
 564
 565   if (context_)
 566     context_->RemoveLiveVersion(version_id_);
 567
 568   if (running_status() == STARTING || running_status() == RUNNING)
 569     embedded_worker_->Stop();
 570   embedded_worker_->RemoveListener(this);
 571 }
 572
 573 void ServiceWorkerVersion::SetStatus(Status status) {
 574   if (status_ == status)
 575     return;
 576
 577   status_ = status;
 578
 579   if (skip_waiting_ && status_ == ACTIVATED) {
 580     for (int request_id : pending_skip_waiting_requests_)
 581       DidSkipWaiting(request_id);
 582     pending_skip_waiting_requests_.clear();
 583   }
 584
 585   std::vector<base::Closure> callbacks;
 586   callbacks.swap(status_change_callbacks_);
 587   for (const auto& callback : callbacks)
 588     callback.Run();
 589
 590   FOR_EACH_OBSERVER(Listener, listeners_, OnVersionStateChanged(this));
 591 }
 592
 593 void ServiceWorkerVersion::RegisterStatusChangeCallback(
 594     const base::Closure& callback) {
 595   status_change_callbacks_.push_back(callback);
 596 }
 597
 598 ServiceWorkerVersionInfo ServiceWorkerVersion::GetInfo() {
 599   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 600   ServiceWorkerVersionInfo info(
 601       running_status(), status(), script_url(), registration_id(), version_id(),
 602       embedded_worker()->process_id(), embedded_worker()->thread_id(),
 603       embedded_worker()->worker_devtools_agent_route_id());
 604   for (const auto& controllee : controllee_map_) {
 605     const ServiceWorkerProviderHost* host = controllee.second;
 606     info.clients.insert(std::make_pair(
 607         host->client_uuid(),
 608         ServiceWorkerVersionInfo::ClientInfo(
 609             host->process_id(), host->route_id(), host->provider_type())));
 610   }
 611   if (!main_script_http_info_)
 612     return info;
 613   info.script_response_time = main_script_http_info_->response_time;
 614   if (main_script_http_info_->headers)
 615     main_script_http_info_->headers->GetLastModifiedValue(
 616         &info.script_last_modified);
 617   return info;
 618 }
 619
 620 void ServiceWorkerVersion::StartWorker(const StatusCallback& callback) {
 621   if (!context_) {
 622     RecordStartWorkerResult(SERVICE_WORKER_ERROR_ABORT);
 623     RunSoon(base::Bind(callback, SERVICE_WORKER_ERROR_ABORT));
 624     return;
 625   }
 626   if (is_redundant()) {
 627     RecordStartWorkerResult(SERVICE_WORKER_ERROR_REDUNDANT);
 628     RunSoon(base::Bind(callback, SERVICE_WORKER_ERROR_REDUNDANT));
 629     return;
 630   }
 631   prestart_status_ = status_;
 632
 633   // Ensure the live registration during starting worker so that the worker can
 634   // get associated with it in SWDispatcherHost::OnSetHostedVersionId().
 635   context_->storage()->FindRegistrationForId(
 636       registration_id_,
 637       scope_.GetOrigin(),
 638       base::Bind(&ServiceWorkerVersion::DidEnsureLiveRegistrationForStartWorker,
 639                  weak_factory_.GetWeakPtr(),
 640                  callback));
 641 }
 642
 643 void ServiceWorkerVersion::StopWorker(const StatusCallback& callback) {
 644   if (running_status() == STOPPED) {
 645     RunSoon(base::Bind(callback, SERVICE_WORKER_OK));
 646     return;
 647   }
 648   if (stop_callbacks_.empty()) {
 649     ServiceWorkerStatusCode status = embedded_worker_->Stop();
 650     if (status != SERVICE_WORKER_OK) {
 651       RunSoon(base::Bind(callback, status));
 652       return;
 653     }
 654   }
 655   stop_callbacks_.push_back(callback);
 656 }
 657
 658 void ServiceWorkerVersion::ScheduleUpdate() {
 659   if (!context_)
 660     return;
 661   if (update_timer_.IsRunning()) {
 662     update_timer_.Reset();
 663     return;
 664   }
 665   if (is_update_scheduled_)
 666     return;
 667   is_update_scheduled_ = true;
 668
 669   // Protect |this| until the timer fires, since we may be stopping
 670   // and soon no one might hold a reference to us.
 671   context_->ProtectVersion(make_scoped_refptr(this));
 672   update_timer_.Start(FROM_HERE,
 673                       base::TimeDelta::FromSeconds(kUpdateDelaySeconds),
 674                       base::Bind(&ServiceWorkerVersion::StartUpdate,
 675                                  weak_factory_.GetWeakPtr()));
 676 }
 677
 678 void ServiceWorkerVersion::StartUpdate() {
 679   if (!context_)
 680     return;
 681   context_->storage()->FindRegistrationForId(
 682       registration_id_, scope_.GetOrigin(),
 683       base::Bind(&ServiceWorkerVersion::FoundRegistrationForUpdate,
 684                  weak_factory_.GetWeakPtr()));
 685 }
 686
 687 void ServiceWorkerVersion::DeferScheduledUpdate() {
 688   if (update_timer_.IsRunning())
 689     update_timer_.Reset();
 690 }
 691
 692 void ServiceWorkerVersion::DispatchMessageEvent(
 693     const base::string16& message,
 694     const std::vector<TransferredMessagePort>& sent_message_ports,
 695     const StatusCallback& callback) {
 696   for (const TransferredMessagePort& port : sent_message_ports) {
 697     MessagePortService::GetInstance()->HoldMessages(port.id);
 698   }
 699
 700   DispatchMessageEventInternal(message, sent_message_ports, callback);
 701 }
 702
 703 void ServiceWorkerVersion::DispatchMessageEventInternal(
 704     const base::string16& message,
 705     const std::vector<TransferredMessagePort>& sent_message_ports,
 706     const StatusCallback& callback) {
 707   if (running_status() != RUNNING) {
 708     // Schedule calling this method after starting the worker.
 709     StartWorker(base::Bind(
 710         &RunTaskAfterStartWorker, weak_factory_.GetWeakPtr(),
 711         base::Bind(&RunErrorMessageCallback, sent_message_ports, callback),
 712         base::Bind(&self::DispatchMessageEventInternal,
 713                    weak_factory_.GetWeakPtr(), message, sent_message_ports,
 714                    callback)));
 715     return;
 716   }
 717
 718   // TODO(kinuko): Cleanup this (and corresponding unit test) when message
 719   // event becomes extendable, round-trip event. (crbug.com/498596)
 720   RestartTick(&idle_time_);
 721
 722   MessagePortMessageFilter* filter =
 723       embedded_worker_->message_port_message_filter();
 724   std::vector<int> new_routing_ids;
 725   filter->UpdateMessagePortsWithNewRoutes(sent_message_ports, &new_routing_ids);
 726   ServiceWorkerStatusCode status =
 727       embedded_worker_->SendMessage(ServiceWorkerMsg_MessageToWorker(
 728           message, sent_message_ports, new_routing_ids));
 729   RunSoon(base::Bind(callback, status));
 730 }
 731
 732 void ServiceWorkerVersion::DispatchInstallEvent(
 733     const StatusCallback& callback) {
 734   DCHECK_EQ(INSTALLING, status()) << status();
 735
 736   if (running_status() != RUNNING) {
 737     // Schedule calling this method after starting the worker.
 738     StartWorker(
 739         base::Bind(&RunTaskAfterStartWorker,
 740                    weak_factory_.GetWeakPtr(),
 741                    callback,
 742                    base::Bind(&self::DispatchInstallEventAfterStartWorker,
 743                               weak_factory_.GetWeakPtr(),
 744                               callback)));
 745   } else {
 746     DispatchInstallEventAfterStartWorker(callback);
 747   }
 748 }
 749
 750 void ServiceWorkerVersion::DispatchActivateEvent(
 751     const StatusCallback& callback) {
 752   DCHECK_EQ(ACTIVATING, status()) << status();
 753
 754   if (running_status() != RUNNING) {
 755     // Schedule calling this method after starting the worker.
 756     StartWorker(
 757         base::Bind(&RunTaskAfterStartWorker,
 758                    weak_factory_.GetWeakPtr(),
 759                    callback,
 760                    base::Bind(&self::DispatchActivateEventAfterStartWorker,
 761                               weak_factory_.GetWeakPtr(),
 762                               callback)));
 763   } else {
 764     DispatchActivateEventAfterStartWorker(callback);
 765   }
 766 }
 767
 768 void ServiceWorkerVersion::DispatchFetchEvent(
 769     const ServiceWorkerFetchRequest& request,
 770     const base::Closure& prepare_callback,
 771     const FetchCallback& fetch_callback) {
 772   DCHECK_EQ(ACTIVATED, status()) << status();
 773
 774   if (running_status() != RUNNING) {
 775     // Schedule calling this method after starting the worker.
 776     StartWorker(base::Bind(&RunTaskAfterStartWorker,
 777                            weak_factory_.GetWeakPtr(),
 778                            base::Bind(&RunErrorFetchCallback, fetch_callback),
 779                            base::Bind(&self::DispatchFetchEvent,
 780                                       weak_factory_.GetWeakPtr(),
 781                                       request,
 782                                       prepare_callback,
 783                                       fetch_callback)));
 784     return;
 785   }
 786
 787   prepare_callback.Run();
 788
 789   int request_id = AddRequest(fetch_callback, &fetch_requests_, REQUEST_FETCH);
 790   ServiceWorkerStatusCode status = embedded_worker_->SendMessage(
 791       ServiceWorkerMsg_FetchEvent(request_id, request));
 792   if (status != SERVICE_WORKER_OK) {
 793     fetch_requests_.Remove(request_id);
 794     RunSoon(base::Bind(&RunErrorFetchCallback,
 795                        fetch_callback,
 796                        SERVICE_WORKER_ERROR_FAILED));
 797   }
 798 }
 799
 800 void ServiceWorkerVersion::DispatchSyncEvent(SyncRegistrationPtr registration,
 801                                              const StatusCallback& callback) {
 802   DCHECK_EQ(ACTIVATED, status()) << status();
 803   if (running_status() != RUNNING) {
 804     // Schedule calling this method after starting the worker.
 805     StartWorker(base::Bind(
 806         &RunTaskAfterStartWorker, weak_factory_.GetWeakPtr(), callback,
 807         base::Bind(&self::DispatchSyncEvent, weak_factory_.GetWeakPtr(),
 808                    base::Passed(registration.Pass()), callback)));
 809     return;
 810   }
 811
 812   int request_id = AddRequest(callback, &sync_requests_, REQUEST_SYNC);
 813   if (!background_sync_dispatcher_) {
 814     embedded_worker_->GetServiceRegistry()->ConnectToRemoteService(
 815         mojo::GetProxy(&background_sync_dispatcher_));
 816     background_sync_dispatcher_.set_connection_error_handler(base::Bind(
 817         &ServiceWorkerVersion::OnBackgroundSyncDispatcherConnectionError,
 818         weak_factory_.GetWeakPtr()));
 819   }
 820
 821   background_sync_dispatcher_->Sync(
 822       registration.Pass(), base::Bind(&self::OnSyncEventFinished,
 823                                       weak_factory_.GetWeakPtr(), request_id));
 824 }
 825
 826 void ServiceWorkerVersion::DispatchNotificationClickEvent(
 827     const StatusCallback& callback,
 828     int64_t persistent_notification_id,
 829     const PlatformNotificationData& notification_data) {
 830   DCHECK_EQ(ACTIVATED, status()) << status();
 831   if (running_status() != RUNNING) {
 832     // Schedule calling this method after starting the worker.
 833     StartWorker(base::Bind(
 834         &RunTaskAfterStartWorker, weak_factory_.GetWeakPtr(), callback,
 835         base::Bind(&self::DispatchNotificationClickEvent,
 836                    weak_factory_.GetWeakPtr(), callback,
 837                    persistent_notification_id, notification_data)));
 838     return;
 839   }
 840
 841   int request_id = AddRequest(callback, &notification_click_requests_,
 842                               REQUEST_NOTIFICATION_CLICK);
 843   ServiceWorkerStatusCode status =
 844       embedded_worker_->SendMessage(ServiceWorkerMsg_NotificationClickEvent(
 845           request_id, persistent_notification_id, notification_data));
 846   if (status != SERVICE_WORKER_OK) {
 847     notification_click_requests_.Remove(request_id);
 848     RunSoon(base::Bind(callback, status));
 849   }
 850 }
 851
 852 void ServiceWorkerVersion::DispatchPushEvent(const StatusCallback& callback,
 853                                              const std::string& data) {
 854   DCHECK_EQ(ACTIVATED, status()) << status();
 855   if (running_status() != RUNNING) {
 856     // Schedule calling this method after starting the worker.
 857     StartWorker(base::Bind(&RunTaskAfterStartWorker,
 858                            weak_factory_.GetWeakPtr(), callback,
 859                            base::Bind(&self::DispatchPushEvent,
 860                                       weak_factory_.GetWeakPtr(),
 861                                       callback, data)));
 862     return;
 863   }
 864
 865   int request_id = AddRequest(callback, &push_requests_, REQUEST_PUSH);
 866   ServiceWorkerStatusCode status = embedded_worker_->SendMessage(
 867       ServiceWorkerMsg_PushEvent(request_id, data));
 868   if (status != SERVICE_WORKER_OK) {
 869     push_requests_.Remove(request_id);
 870     RunSoon(base::Bind(callback, status));
 871   }
 872 }
 873
 874 void ServiceWorkerVersion::DispatchGeofencingEvent(
 875     const StatusCallback& callback,
 876     blink::WebGeofencingEventType event_type,
 877     const std::string& region_id,
 878     const blink::WebCircularGeofencingRegion& region) {
 879   DCHECK_EQ(ACTIVATED, status()) << status();
 880
 881   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
 882           switches::kEnableExperimentalWebPlatformFeatures)) {
 883     callback.Run(SERVICE_WORKER_ERROR_ABORT);
 884     return;
 885   }
 886
 887   if (running_status() != RUNNING) {
 888     // Schedule calling this method after starting the worker.
 889     StartWorker(base::Bind(&RunTaskAfterStartWorker,
 890                            weak_factory_.GetWeakPtr(),
 891                            callback,
 892                            base::Bind(&self::DispatchGeofencingEvent,
 893                                       weak_factory_.GetWeakPtr(),
 894                                       callback,
 895                                       event_type,
 896                                       region_id,
 897                                       region)));
 898     return;
 899   }
 900
 901   int request_id =
 902       AddRequest(callback, &geofencing_requests_, REQUEST_GEOFENCING);
 903   ServiceWorkerStatusCode status =
 904       embedded_worker_->SendMessage(ServiceWorkerMsg_GeofencingEvent(
 905           request_id, event_type, region_id, region));
 906   if (status != SERVICE_WORKER_OK) {
 907     geofencing_requests_.Remove(request_id);
 908     RunSoon(base::Bind(callback, status));
 909   }
 910 }
 911
 912 void ServiceWorkerVersion::DispatchServicePortConnectEvent(
 913     const ServicePortConnectCallback& callback,
 914     const GURL& target_url,
 915     const GURL& origin,
 916     int port_id) {
 917   DCHECK_EQ(ACTIVATED, status()) << status();
 918
 919   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
 920           switches::kEnableExperimentalWebPlatformFeatures)) {
 921     callback.Run(SERVICE_WORKER_ERROR_ABORT, false, base::string16(),
 922                  base::string16());
 923     return;
 924   }
 925
 926   if (running_status() != RUNNING) {
 927     // Schedule calling this method after starting the worker.
 928     StartWorker(
 929         base::Bind(&RunTaskAfterStartWorker, weak_factory_.GetWeakPtr(),
 930                    base::Bind(&RunErrorServicePortConnectCallback, callback),
 931                    base::Bind(&self::DispatchServicePortConnectEvent,
 932                               weak_factory_.GetWeakPtr(), callback, target_url,
 933                               origin, port_id)));
 934     return;
 935   }
 936
 937   int request_id = AddRequest(callback, &service_port_connect_requests_,
 938                               REQUEST_SERVICE_PORT_CONNECT);
 939   if (!service_port_dispatcher_) {
 940     embedded_worker_->GetServiceRegistry()->ConnectToRemoteService(
 941         mojo::GetProxy(&service_port_dispatcher_));
 942     service_port_dispatcher_.set_connection_error_handler(base::Bind(
 943         &ServiceWorkerVersion::OnServicePortDispatcherConnectionError,
 944         weak_factory_.GetWeakPtr()));
 945   }
 946   service_port_dispatcher_->Connect(
 947       mojo::String::From(target_url), mojo::String::From(origin), port_id,
 948       base::Bind(&ServiceWorkerVersion::OnServicePortConnectEventFinished,
 949                  weak_factory_.GetWeakPtr(), request_id));
 950 }
 951
 952 void ServiceWorkerVersion::DispatchCrossOriginMessageEvent(
 953     const NavigatorConnectClient& client,
 954     const base::string16& message,
 955     const std::vector<TransferredMessagePort>& sent_message_ports,
 956     const StatusCallback& callback) {
 957   // Unlike in the case of DispatchMessageEvent, here the caller is assumed to
 958   // have already put all the sent message ports on hold. So no need to do that
 959   // here again.
 960
 961   if (running_status() != RUNNING) {
 962     // Schedule calling this method after starting the worker.
 963     StartWorker(base::Bind(
 964         &RunTaskAfterStartWorker, weak_factory_.GetWeakPtr(),
 965         base::Bind(&RunErrorMessageCallback, sent_message_ports, callback),
 966         base::Bind(&self::DispatchCrossOriginMessageEvent,
 967                    weak_factory_.GetWeakPtr(), client, message,
 968                    sent_message_ports, callback)));
 969     return;
 970   }
 971
 972   MessagePortMessageFilter* filter =
 973       embedded_worker_->message_port_message_filter();
 974   std::vector<int> new_routing_ids;
 975   filter->UpdateMessagePortsWithNewRoutes(sent_message_ports, &new_routing_ids);
 976   ServiceWorkerStatusCode status =
 977       embedded_worker_->SendMessage(ServiceWorkerMsg_CrossOriginMessageToWorker(
 978           client, message, sent_message_ports, new_routing_ids));
 979   RunSoon(base::Bind(callback, status));
 980 }
 981
 982 void ServiceWorkerVersion::AddControllee(
 983     ServiceWorkerProviderHost* provider_host) {
 984   const std::string& uuid = provider_host->client_uuid();
 985   CHECK(!provider_host->client_uuid().empty());
 986   DCHECK(!ContainsKey(controllee_map_, uuid));
 987   controllee_map_[uuid] = provider_host;
 988   // Keep the worker alive a bit longer right after a new controllee is added.
 989   RestartTick(&idle_time_);
 990   FOR_EACH_OBSERVER(Listener, listeners_,
 991                     OnControlleeAdded(this, provider_host));
 992 }
 993
 994 void ServiceWorkerVersion::RemoveControllee(
 995     ServiceWorkerProviderHost* provider_host) {
 996   const std::string& uuid = provider_host->client_uuid();
 997   DCHECK(ContainsKey(controllee_map_, uuid));
 998   controllee_map_.erase(uuid);
 999   FOR_EACH_OBSERVER(Listener, listeners_,
1000                     OnControlleeRemoved(this, provider_host));
1001   if (HasControllee())
1002     return;
1003   FOR_EACH_OBSERVER(Listener, listeners_, OnNoControllees(this));
1004 }
1005
1006 bool ServiceWorkerVersion::HasWindowClients() {
1007   return !GetWindowClientsInternal(false /* include_uncontrolled */).empty();
1008 }
1009
1010 void ServiceWorkerVersion::AddStreamingURLRequestJob(
1011     const ServiceWorkerURLRequestJob* request_job) {
1012   DCHECK(streaming_url_request_jobs_.find(request_job) ==
1013          streaming_url_request_jobs_.end());
1014   streaming_url_request_jobs_.insert(request_job);
1015 }
1016
1017 void ServiceWorkerVersion::RemoveStreamingURLRequestJob(
1018     const ServiceWorkerURLRequestJob* request_job) {
1019   streaming_url_request_jobs_.erase(request_job);
1020   if (is_redundant())
1021     StopWorkerIfIdle();
1022 }
1023
1024 void ServiceWorkerVersion::AddListener(Listener* listener) {
1025   listeners_.AddObserver(listener);
1026 }
1027
1028 void ServiceWorkerVersion::RemoveListener(Listener* listener) {
1029   listeners_.RemoveObserver(listener);
1030 }
1031
1032 void ServiceWorkerVersion::ReportError(ServiceWorkerStatusCode status,
1033                                        const std::string& status_message) {
1034   if (status_message.empty()) {
1035     OnReportException(base::UTF8ToUTF16(ServiceWorkerStatusToString(status)),
1036                       -1, -1, GURL());
1037   } else {
1038     OnReportException(base::UTF8ToUTF16(status_message), -1, -1, GURL());
1039   }
1040 }
1041
1042 void ServiceWorkerVersion::SetStartWorkerStatusCode(
1043     ServiceWorkerStatusCode status) {
1044   start_worker_status_ = status;
1045 }
1046
1047 void ServiceWorkerVersion::Doom() {
1048   DCHECK(!HasControllee());
1049   SetStatus(REDUNDANT);
1050   if (running_status() == STARTING || running_status() == RUNNING)
1051     embedded_worker_->Stop();
1052   if (!context_)
1053     return;
1054   std::vector<ServiceWorkerDatabase::ResourceRecord> resources;
1055   script_cache_map_.GetResources(&resources);
1056   context_->storage()->PurgeResources(resources);
1057 }
1058
1059 void ServiceWorkerVersion::SetDevToolsAttached(bool attached) {
1060   embedded_worker()->set_devtools_attached(attached);
1061   if (attached) {
1062     // TODO(falken): Canceling the timeouts when debugging could cause
1063     // heisenbugs; we should instead run them as normal show an educational
1064     // message in DevTools when they occur. crbug.com/470419
1065
1066     // Don't record the startup time metric once DevTools is attached.
1067     ClearTick(&start_time_);
1068     skip_recording_startup_time_ = true;
1069
1070     // Cancel request timeouts.
1071     SetAllRequestTimes(base::TimeTicks());
1072     return;
1073   }
1074   if (!start_callbacks_.empty()) {
1075     // Reactivate the timer for start timeout.
1076     DCHECK(timeout_timer_.IsRunning());
1077     DCHECK(running_status() == STARTING || running_status() == STOPPING)
1078         << running_status();
1079     RestartTick(&start_time_);
1080   }
1081
1082   // Reactivate request timeouts.
1083   SetAllRequestTimes(base::TimeTicks::Now());
1084 }
1085
1086 void ServiceWorkerVersion::SetMainScriptHttpResponseInfo(
1087     const net::HttpResponseInfo& http_info) {
1088   main_script_http_info_.reset(new net::HttpResponseInfo(http_info));
1089   FOR_EACH_OBSERVER(Listener, listeners_,
1090                     OnMainScriptHttpResponseInfoSet(this));
1091 }
1092
1093 void ServiceWorkerVersion::SimulatePingTimeoutForTesting() {
1094   ping_controller_->SimulateTimeoutForTesting();
1095 }
1096
1097 const net::HttpResponseInfo*
1098 ServiceWorkerVersion::GetMainScriptHttpResponseInfo() {
1099   return main_script_http_info_.get();
1100 }
1101
1102 ServiceWorkerVersion::RequestInfo::RequestInfo(int id,
1103                                                RequestType type,
1104                                                const base::TimeTicks& now)
1105     : id(id), type(type), time(now) {
1106 }
1107
1108 ServiceWorkerVersion::RequestInfo::~RequestInfo() {
1109 }
1110
1111 template <typename CallbackType>
1112 ServiceWorkerVersion::PendingRequest<CallbackType>::PendingRequest(
1113     const CallbackType& callback,
1114     const base::TimeTicks& time)
1115     : callback(callback), start_time(time) {
1116 }
1117
1118 template <typename CallbackType>
1119 ServiceWorkerVersion::PendingRequest<CallbackType>::~PendingRequest() {
1120 }
1121
1122 void ServiceWorkerVersion::OnScriptLoaded() {
1123   DCHECK_EQ(STARTING, running_status());
1124   // Activate ping/pong now that JavaScript execution will start.
1125   ping_controller_->Activate();
1126 }
1127
1128 void ServiceWorkerVersion::OnStarting() {
1129   FOR_EACH_OBSERVER(Listener, listeners_, OnRunningStateChanged(this));
1130 }
1131
1132 void ServiceWorkerVersion::OnStarted() {
1133   DCHECK_EQ(RUNNING, running_status());
1134   RestartTick(&idle_time_);
1135
1136   // Fire all start callbacks.
1137   scoped_refptr<ServiceWorkerVersion> protect(this);
1138   RunCallbacks(this, &start_callbacks_, SERVICE_WORKER_OK);
1139   FOR_EACH_OBSERVER(Listener, listeners_, OnRunningStateChanged(this));
1140 }
1141
1142 void ServiceWorkerVersion::OnStopping() {
1143   metrics_->NotifyStopping();
1144   RestartTick(&stop_time_);
1145   FOR_EACH_OBSERVER(Listener, listeners_, OnRunningStateChanged(this));
1146 }
1147
1148 void ServiceWorkerVersion::OnStopped(
1149     EmbeddedWorkerInstance::Status old_status) {
1150   metrics_->NotifyStopped();
1151   if (!stop_time_.is_null())
1152     ServiceWorkerMetrics::RecordStopWorkerTime(GetTickDuration(stop_time_));
1153
1154   OnStoppedInternal(old_status);
1155 }
1156
1157 void ServiceWorkerVersion::OnDetached(
1158     EmbeddedWorkerInstance::Status old_status) {
1159   OnStoppedInternal(old_status);
1160 }
1161
1162 void ServiceWorkerVersion::OnReportException(
1163     const base::string16& error_message,
1164     int line_number,
1165     int column_number,
1166     const GURL& source_url) {
1167   FOR_EACH_OBSERVER(
1168       Listener,
1169       listeners_,
1170       OnErrorReported(
1171           this, error_message, line_number, column_number, source_url));
1172 }
1173
1174 void ServiceWorkerVersion::OnReportConsoleMessage(int source_identifier,
1175                                                   int message_level,
1176                                                   const base::string16& message,
1177                                                   int line_number,
1178                                                   const GURL& source_url) {
1179   FOR_EACH_OBSERVER(Listener,
1180                     listeners_,
1181                     OnReportConsoleMessage(this,
1182                                            source_identifier,
1183                                            message_level,
1184                                            message,
1185                                            line_number,
1186                                            source_url));
1187 }
1188
1189 bool ServiceWorkerVersion::OnMessageReceived(const IPC::Message& message) {
1190   bool handled = true;
1191   IPC_BEGIN_MESSAGE_MAP(ServiceWorkerVersion, message)
1192     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_GetClients,
1193                         OnGetClients)
1194     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_ActivateEventFinished,
1195                         OnActivateEventFinished)
1196     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_InstallEventFinished,
1197                         OnInstallEventFinished)
1198     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_FetchEventFinished,
1199                         OnFetchEventFinished)
1200     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_NotificationClickEventFinished,
1201                         OnNotificationClickEventFinished)
1202     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_PushEventFinished,
1203                         OnPushEventFinished)
1204     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_GeofencingEventFinished,
1205                         OnGeofencingEventFinished)
1206     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_OpenWindow,
1207                         OnOpenWindow)
1208     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_SetCachedMetadata,
1209                         OnSetCachedMetadata)
1210     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_ClearCachedMetadata,
1211                         OnClearCachedMetadata)
1212     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_PostMessageToClient,
1213                         OnPostMessageToClient)
1214     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_FocusClient,
1215                         OnFocusClient)
1216     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_NavigateClient, OnNavigateClient)
1217     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_SkipWaiting,
1218                         OnSkipWaiting)
1219     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_ClaimClients,
1220                         OnClaimClients)
1221     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_Pong, OnPongFromWorker)
1222     IPC_MESSAGE_UNHANDLED(handled = false)
1223   IPC_END_MESSAGE_MAP()
1224   return handled;
1225 }
1226
1227 void ServiceWorkerVersion::OnStartSentAndScriptEvaluated(
1228     ServiceWorkerStatusCode status) {
1229   if (status != SERVICE_WORKER_OK) {
1230     RunCallbacks(this, &start_callbacks_,
1231                  DeduceStartWorkerFailureReason(status));
1232   }
1233 }
1234
1235 void ServiceWorkerVersion::DispatchInstallEventAfterStartWorker(
1236     const StatusCallback& callback) {
1237   DCHECK_EQ(RUNNING, running_status())
1238       << "Worker stopped too soon after it was started.";
1239
1240   int request_id = AddRequest(callback, &install_requests_, REQUEST_INSTALL);
1241   ServiceWorkerStatusCode status = embedded_worker_->SendMessage(
1242       ServiceWorkerMsg_InstallEvent(request_id));
1243   if (status != SERVICE_WORKER_OK) {
1244     install_requests_.Remove(request_id);
1245     RunSoon(base::Bind(callback, status));
1246   }
1247 }
1248
1249 void ServiceWorkerVersion::DispatchActivateEventAfterStartWorker(
1250     const StatusCallback& callback) {
1251   DCHECK_EQ(RUNNING, running_status())
1252       << "Worker stopped too soon after it was started.";
1253
1254   int request_id = AddRequest(callback, &activate_requests_, REQUEST_ACTIVATE);
1255   ServiceWorkerStatusCode status =
1256       embedded_worker_->SendMessage(ServiceWorkerMsg_ActivateEvent(request_id));
1257   if (status != SERVICE_WORKER_OK) {
1258     activate_requests_.Remove(request_id);
1259     RunSoon(base::Bind(callback, status));
1260   }
1261 }
1262
1263 void ServiceWorkerVersion::OnGetClients(
1264     int request_id,
1265     const ServiceWorkerClientQueryOptions& options) {
1266   TRACE_EVENT_ASYNC_BEGIN2(
1267       "ServiceWorker", "ServiceWorkerVersion::OnGetClients", request_id,
1268       "client_type", options.client_type, "include_uncontrolled",
1269       options.include_uncontrolled);
1270
1271   if (controllee_map_.empty() && !options.include_uncontrolled) {
1272     OnGetClientsFinished(request_id, std::vector<ServiceWorkerClientInfo>());
1273     return;
1274   }
1275
1276   // For Window clients we want to query the info on the UI thread first.
1277   if (options.client_type == blink::WebServiceWorkerClientTypeWindow ||
1278       options.client_type == blink::WebServiceWorkerClientTypeAll) {
1279     GetWindowClients(request_id, options);
1280     return;
1281   }
1282
1283   ServiceWorkerClients clients;
1284   GetNonWindowClients(request_id, options, &clients);
1285   OnGetClientsFinished(request_id, clients);
1286 }
1287
1288 void ServiceWorkerVersion::OnGetClientsFinished(
1289     int request_id,
1290     const ServiceWorkerClients& clients) {
1291   DCHECK_CURRENTLY_ON(BrowserThread::IO);
1292   TRACE_EVENT_ASYNC_END1("ServiceWorker", "ServiceWorkerVersion::OnGetClients",
1293                          request_id, "The number of clients", clients.size());
1294
1295   if (running_status() != RUNNING)
1296     return;
1297   embedded_worker_->SendMessage(
1298       ServiceWorkerMsg_DidGetClients(request_id, clients));
1299 }
1300
1301 void ServiceWorkerVersion::OnActivateEventFinished(
1302     int request_id,
1303     blink::WebServiceWorkerEventResult result) {
1304   DCHECK(ACTIVATING == status() ||
1305          REDUNDANT == status()) << status();
1306   TRACE_EVENT0("ServiceWorker",
1307                "ServiceWorkerVersion::OnActivateEventFinished");
1308
1309   PendingRequest<StatusCallback>* request =
1310       activate_requests_.Lookup(request_id);
1311   if (!request) {
1312     NOTREACHED() << "Got unexpected message: " << request_id;
1313     return;
1314   }
1315   ServiceWorkerStatusCode rv = SERVICE_WORKER_OK;
1316   if (result == blink::WebServiceWorkerEventResultRejected)
1317     rv = SERVICE_WORKER_ERROR_ACTIVATE_WORKER_FAILED;
1318
1319   UMA_HISTOGRAM_MEDIUM_TIMES("ServiceWorker.ActivateEvent.Time",
1320                              base::TimeTicks::Now() - request->start_time);
1321
1322   scoped_refptr<ServiceWorkerVersion> protect(this);
1323   request->callback.Run(rv);
1324   RemoveCallbackAndStopIfRedundant(&activate_requests_, request_id);
1325 }
1326
1327 void ServiceWorkerVersion::OnInstallEventFinished(
1328     int request_id,
1329     blink::WebServiceWorkerEventResult result) {
1330   // Status is REDUNDANT if the worker was doomed while handling the install
1331   // event, and finished handling before being terminated.
1332   DCHECK(status() == INSTALLING || status() == REDUNDANT) << status();
1333   TRACE_EVENT0("ServiceWorker",
1334                "ServiceWorkerVersion::OnInstallEventFinished");
1335
1336   PendingRequest<StatusCallback>* request =
1337       install_requests_.Lookup(request_id);
1338   if (!request) {
1339     NOTREACHED() << "Got unexpected message: " << request_id;
1340     return;
1341   }
1342   ServiceWorkerStatusCode status = SERVICE_WORKER_OK;
1343   if (result == blink::WebServiceWorkerEventResultRejected)
1344     status = SERVICE_WORKER_ERROR_INSTALL_WORKER_FAILED;
1345
1346   UMA_HISTOGRAM_MEDIUM_TIMES("ServiceWorker.InstallEvent.Time",
1347                              base::TimeTicks::Now() - request->start_time);
1348
1349   scoped_refptr<ServiceWorkerVersion> protect(this);
1350   request->callback.Run(status);
1351   RemoveCallbackAndStopIfRedundant(&install_requests_, request_id);
1352 }
1353
1354 void ServiceWorkerVersion::OnFetchEventFinished(
1355     int request_id,
1356     ServiceWorkerFetchEventResult result,
1357     const ServiceWorkerResponse& response) {
1358   TRACE_EVENT1("ServiceWorker",
1359                "ServiceWorkerVersion::OnFetchEventFinished",
1360                "Request id", request_id);
1361   PendingRequest<FetchCallback>* request = fetch_requests_.Lookup(request_id);
1362   if (!request) {
1363     NOTREACHED() << "Got unexpected message: " << request_id;
1364     return;
1365   }
1366
1367   // TODO(kinuko): Record other event statuses too.
1368   const bool handled = (result == SERVICE_WORKER_FETCH_EVENT_RESULT_RESPONSE);
1369   metrics_->RecordEventHandledStatus(ServiceWorkerMetrics::EVENT_TYPE_FETCH,
1370                                      handled);
1371
1372   ServiceWorkerMetrics::RecordFetchEventTime(
1373       result, base::TimeTicks::Now() - request->start_time);
1374
1375   scoped_refptr<ServiceWorkerVersion> protect(this);
1376   request->callback.Run(SERVICE_WORKER_OK, result, response);
1377   RemoveCallbackAndStopIfRedundant(&fetch_requests_, request_id);
1378 }
1379
1380 void ServiceWorkerVersion::OnSyncEventFinished(
1381     int request_id,
1382     ServiceWorkerEventStatus status) {
1383   TRACE_EVENT1("ServiceWorker",
1384                "ServiceWorkerVersion::OnSyncEventFinished",
1385                "Request id", request_id);
1386   PendingRequest<StatusCallback>* request = sync_requests_.Lookup(request_id);
1387   if (!request) {
1388     NOTREACHED() << "Got unexpected message: " << request_id;
1389     return;
1390   }
1391
1392   scoped_refptr<ServiceWorkerVersion> protect(this);
1393   request->callback.Run(mojo::ConvertTo<ServiceWorkerStatusCode>(status));
1394   RemoveCallbackAndStopIfRedundant(&sync_requests_, request_id);
1395 }
1396
1397 void ServiceWorkerVersion::OnNotificationClickEventFinished(
1398     int request_id) {
1399   TRACE_EVENT1("ServiceWorker",
1400                "ServiceWorkerVersion::OnNotificationClickEventFinished",
1401                "Request id", request_id);
1402   PendingRequest<StatusCallback>* request =
1403       notification_click_requests_.Lookup(request_id);
1404   if (!request) {
1405     NOTREACHED() << "Got unexpected message: " << request_id;
1406     return;
1407   }
1408
1409   UMA_HISTOGRAM_MEDIUM_TIMES("ServiceWorker.NotificationClickEvent.Time",
1410                              base::TimeTicks::Now() - request->start_time);
1411
1412   scoped_refptr<ServiceWorkerVersion> protect(this);
1413   request->callback.Run(SERVICE_WORKER_OK);
1414   RemoveCallbackAndStopIfRedundant(&notification_click_requests_, request_id);
1415 }
1416
1417 void ServiceWorkerVersion::OnPushEventFinished(
1418     int request_id,
1419     blink::WebServiceWorkerEventResult result) {
1420   TRACE_EVENT1("ServiceWorker",
1421                "ServiceWorkerVersion::OnPushEventFinished",
1422                "Request id", request_id);
1423   PendingRequest<StatusCallback>* request = push_requests_.Lookup(request_id);
1424   if (!request) {
1425     NOTREACHED() << "Got unexpected message: " << request_id;
1426     return;
1427   }
1428   ServiceWorkerStatusCode status = SERVICE_WORKER_OK;
1429   if (result == blink::WebServiceWorkerEventResultRejected)
1430     status = SERVICE_WORKER_ERROR_EVENT_WAITUNTIL_REJECTED;
1431
1432   UMA_HISTOGRAM_MEDIUM_TIMES("ServiceWorker.PushEvent.Time",
1433                              base::TimeTicks::Now() - request->start_time);
1434
1435   scoped_refptr<ServiceWorkerVersion> protect(this);
1436   request->callback.Run(status);
1437   RemoveCallbackAndStopIfRedundant(&push_requests_, request_id);
1438 }
1439
1440 void ServiceWorkerVersion::OnGeofencingEventFinished(int request_id) {
1441   TRACE_EVENT1("ServiceWorker",
1442                "ServiceWorkerVersion::OnGeofencingEventFinished",
1443                "Request id",
1444                request_id);
1445   PendingRequest<StatusCallback>* request =
1446       geofencing_requests_.Lookup(request_id);
1447   if (!request) {
1448     NOTREACHED() << "Got unexpected message: " << request_id;
1449     return;
1450   }
1451
1452   scoped_refptr<ServiceWorkerVersion> protect(this);
1453   request->callback.Run(SERVICE_WORKER_OK);
1454   RemoveCallbackAndStopIfRedundant(&geofencing_requests_, request_id);
1455 }
1456
1457 void ServiceWorkerVersion::OnServicePortConnectEventFinished(
1458     int request_id,
1459     ServicePortConnectResult result,
1460     const mojo::String& name,
1461     const mojo::String& data) {
1462   TRACE_EVENT1("ServiceWorker",
1463                "ServiceWorkerVersion::OnServicePortConnectEventFinished",
1464                "Request id", request_id);
1465   PendingRequest<ServicePortConnectCallback>* request =
1466       service_port_connect_requests_.Lookup(request_id);
1467   if (!request) {
1468     NOTREACHED() << "Got unexpected message: " << request_id;
1469     return;
1470   }
1471
1472   scoped_refptr<ServiceWorkerVersion> protect(this);
1473   request->callback.Run(SERVICE_WORKER_OK,
1474                         result == SERVICE_PORT_CONNECT_RESULT_ACCEPT,
1475                         name.To<base::string16>(), data.To<base::string16>());
1476   RemoveCallbackAndStopIfRedundant(&service_port_connect_requests_, request_id);
1477 }
1478
1479 void ServiceWorkerVersion::OnOpenWindow(int request_id, GURL url) {
1480   // Just abort if we are shutting down.
1481   if (!context_)
1482     return;
1483
1484   if (!url.is_valid()) {
1485     DVLOG(1) << "Received unexpected invalid URL from renderer process.";
1486     BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
1487                             base::Bind(&KillEmbeddedWorkerProcess,
1488                                        embedded_worker_->process_id(),
1489                                        RESULT_CODE_KILLED_BAD_MESSAGE));
1490     return;
1491   }
1492
1493   // The renderer treats all URLs in the about: scheme as being about:blank.
1494   // Canonicalize about: URLs to about:blank.
1495   if (url.SchemeIs(url::kAboutScheme))
1496     url = GURL(url::kAboutBlankURL);
1497
1498   // Reject requests for URLs that the process is not allowed to access. It's
1499   // possible to receive such requests since the renderer-side checks are
1500   // slightly different. For example, the view-source scheme will not be
1501   // filtered out by Blink.
1502   if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanRequestURL(
1503           embedded_worker_->process_id(), url)) {
1504     embedded_worker_->SendMessage(ServiceWorkerMsg_OpenWindowError(
1505         request_id, url.spec() + " cannot be opened."));
1506     return;
1507   }
1508
1509   BrowserThread::PostTask(
1510       BrowserThread::UI, FROM_HERE,
1511       base::Bind(&OpenWindowOnUI,
1512                  url,
1513                  script_url_,
1514                  embedded_worker_->process_id(),
1515                  make_scoped_refptr(context_->wrapper()),
1516                  base::Bind(&ServiceWorkerVersion::DidOpenWindow,
1517                             weak_factory_.GetWeakPtr(),
1518                             request_id)));
1519 }
1520
1521 void ServiceWorkerVersion::DidOpenWindow(int request_id,
1522                                          int render_process_id,
1523                                          int render_frame_id) {
1524   DCHECK_CURRENTLY_ON(BrowserThread::IO);
1525
1526   if (running_status() != RUNNING)
1527     return;
1528
1529   if (render_process_id == ChildProcessHost::kInvalidUniqueID &&
1530       render_frame_id == MSG_ROUTING_NONE) {
1531     embedded_worker_->SendMessage(ServiceWorkerMsg_OpenWindowError(
1532         request_id, "Something went wrong while trying to open the window."));
1533     return;
1534   }
1535
1536   for (auto it =
1537            context_->GetClientProviderHostIterator(script_url_.GetOrigin());
1538        !it->IsAtEnd(); it->Advance()) {
1539     ServiceWorkerProviderHost* provider_host = it->GetProviderHost();
1540     if (provider_host->process_id() != render_process_id ||
1541         provider_host->frame_id() != render_frame_id) {
1542       continue;
1543     }
1544     provider_host->GetWindowClientInfo(base::Bind(
1545         &ServiceWorkerVersion::OnOpenWindowFinished, weak_factory_.GetWeakPtr(),
1546         request_id, provider_host->client_uuid()));
1547     return;
1548   }
1549
1550   // If here, it means that no provider_host was found, in which case, the
1551   // renderer should still be informed that the window was opened.
1552   OnOpenWindowFinished(request_id, std::string(), ServiceWorkerClientInfo());
1553 }
1554
1555 void ServiceWorkerVersion::OnOpenWindowFinished(
1556     int request_id,
1557     const std::string& client_uuid,
1558     const ServiceWorkerClientInfo& client_info) {
1559   DCHECK_CURRENTLY_ON(BrowserThread::IO);
1560
1561   if (running_status() != RUNNING)
1562     return;
1563
1564   ServiceWorkerClientInfo client(client_info);
1565
1566   // If the |client_info| is empty, it means that the opened window wasn't
1567   // controlled but the action still succeeded. The renderer process is
1568   // expecting an empty client in such case.
1569   if (!client.IsEmpty())
1570     client.client_uuid = client_uuid;
1571
1572   embedded_worker_->SendMessage(ServiceWorkerMsg_OpenWindowResponse(
1573       request_id, client));
1574 }
1575
1576 void ServiceWorkerVersion::OnSetCachedMetadata(const GURL& url,
1577                                                const std::vector<char>& data) {
1578   int64 callback_id = base::TimeTicks::Now().ToInternalValue();
1579   TRACE_EVENT_ASYNC_BEGIN1("ServiceWorker",
1580                            "ServiceWorkerVersion::OnSetCachedMetadata",
1581                            callback_id, "URL", url.spec());
1582   script_cache_map_.WriteMetadata(
1583       url, data, base::Bind(&ServiceWorkerVersion::OnSetCachedMetadataFinished,
1584                             weak_factory_.GetWeakPtr(), callback_id));
1585 }
1586
1587 void ServiceWorkerVersion::OnSetCachedMetadataFinished(int64 callback_id,
1588                                                        int result) {
1589   TRACE_EVENT_ASYNC_END1("ServiceWorker",
1590                          "ServiceWorkerVersion::OnSetCachedMetadata",
1591                          callback_id, "result", result);
1592   FOR_EACH_OBSERVER(Listener, listeners_, OnCachedMetadataUpdated(this));
1593 }
1594
1595 void ServiceWorkerVersion::OnClearCachedMetadata(const GURL& url) {
1596   int64 callback_id = base::TimeTicks::Now().ToInternalValue();
1597   TRACE_EVENT_ASYNC_BEGIN1("ServiceWorker",
1598                            "ServiceWorkerVersion::OnClearCachedMetadata",
1599                            callback_id, "URL", url.spec());
1600   script_cache_map_.ClearMetadata(
1601       url, base::Bind(&ServiceWorkerVersion::OnClearCachedMetadataFinished,
1602                       weak_factory_.GetWeakPtr(), callback_id));
1603 }
1604
1605 void ServiceWorkerVersion::OnClearCachedMetadataFinished(int64 callback_id,
1606                                                          int result) {
1607   TRACE_EVENT_ASYNC_END1("ServiceWorker",
1608                          "ServiceWorkerVersion::OnClearCachedMetadata",
1609                          callback_id, "result", result);
1610   FOR_EACH_OBSERVER(Listener, listeners_, OnCachedMetadataUpdated(this));
1611 }
1612
1613 void ServiceWorkerVersion::OnPostMessageToClient(
1614     const std::string& client_uuid,
1615     const base::string16& message,
1616     const std::vector<TransferredMessagePort>& sent_message_ports) {
1617   if (!context_)
1618     return;
1619   TRACE_EVENT1("ServiceWorker",
1620                "ServiceWorkerVersion::OnPostMessageToDocument",
1621                "Client id", client_uuid);
1622   ServiceWorkerProviderHost* provider_host =
1623       context_->GetProviderHostByClientID(client_uuid);
1624   if (!provider_host) {
1625     // The client may already have been closed, just ignore.
1626     return;
1627   }
1628   if (provider_host->document_url().GetOrigin() != script_url_.GetOrigin()) {
1629     // The client does not belong to the same origin as this ServiceWorker,
1630     // possibly due to timing issue or bad message.
1631     return;
1632   }
1633   provider_host->PostMessage(this, message, sent_message_ports);
1634 }
1635
1636 void ServiceWorkerVersion::OnFocusClient(int request_id,
1637                                          const std::string& client_uuid) {
1638   if (!context_)
1639     return;
1640   TRACE_EVENT2("ServiceWorker",
1641                "ServiceWorkerVersion::OnFocusClient",
1642                "Request id", request_id,
1643                "Client id", client_uuid);
1644   ServiceWorkerProviderHost* provider_host =
1645       context_->GetProviderHostByClientID(client_uuid);
1646   if (!provider_host) {
1647     // The client may already have been closed, just ignore.
1648     return;
1649   }
1650   if (provider_host->document_url().GetOrigin() != script_url_.GetOrigin()) {
1651     // The client does not belong to the same origin as this ServiceWorker,
1652     // possibly due to timing issue or bad message.
1653     return;
1654   }
1655   provider_host->Focus(base::Bind(&ServiceWorkerVersion::OnFocusClientFinished,
1656                                   weak_factory_.GetWeakPtr(), request_id,
1657                                   client_uuid));
1658 }
1659
1660 void ServiceWorkerVersion::OnFocusClientFinished(
1661     int request_id,
1662     const std::string& client_uuid,
1663     const ServiceWorkerClientInfo& client) {
1664   DCHECK_CURRENTLY_ON(BrowserThread::IO);
1665
1666   if (running_status() != RUNNING)
1667     return;
1668
1669   ServiceWorkerClientInfo client_info(client);
1670   client_info.client_uuid = client_uuid;
1671
1672   embedded_worker_->SendMessage(ServiceWorkerMsg_FocusClientResponse(
1673       request_id, client_info));
1674 }
1675
1676 void ServiceWorkerVersion::OnNavigateClient(int request_id,
1677                                             const std::string& client_uuid,
1678                                             const GURL& url) {
1679   if (!context_)
1680     return;
1681
1682   TRACE_EVENT2("ServiceWorker", "ServiceWorkerVersion::OnNavigateClient",
1683                "Request id", request_id, "Client id", client_uuid);
1684
1685   if (!url.is_valid() || !base::IsValidGUID(client_uuid)) {
1686     DVLOG(1) << "Received unexpected invalid URL/UUID from renderer process.";
1687     BrowserThread::PostTask(
1688         BrowserThread::UI, FROM_HERE,
1689         base::Bind(&KillEmbeddedWorkerProcess, embedded_worker_->process_id(),
1690                    RESULT_CODE_KILLED_BAD_MESSAGE));
1691     return;
1692   }
1693
1694   // Reject requests for URLs that the process is not allowed to access. It's
1695   // possible to receive such requests since the renderer-side checks are
1696   // slightly different. For example, the view-source scheme will not be
1697   // filtered out by Blink.
1698   if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanRequestURL(
1699           embedded_worker_->process_id(), url)) {
1700     embedded_worker_->SendMessage(
1701         ServiceWorkerMsg_NavigateClientError(request_id, url));
1702     return;
1703   }
1704
1705   ServiceWorkerProviderHost* provider_host =
1706       context_->GetProviderHostByClientID(client_uuid);
1707   if (!provider_host || provider_host->active_version() != this) {
1708     embedded_worker_->SendMessage(
1709         ServiceWorkerMsg_NavigateClientError(request_id, url));
1710     return;
1711   }
1712
1713   BrowserThread::PostTask(
1714       BrowserThread::UI, FROM_HERE,
1715       base::Bind(&NavigateClientOnUI, url, script_url_,
1716                  provider_host->process_id(), provider_host->frame_id(),
1717                  base::Bind(&ServiceWorkerVersion::DidNavigateClient,
1718                             weak_factory_.GetWeakPtr(), request_id)));
1719 }
1720
1721 void ServiceWorkerVersion::DidNavigateClient(int request_id,
1722                                              int render_process_id,
1723                                              int render_frame_id) {
1724   DCHECK_CURRENTLY_ON(BrowserThread::IO);
1725
1726   if (running_status() != RUNNING)
1727     return;
1728
1729   if (render_process_id == ChildProcessHost::kInvalidUniqueID &&
1730       render_frame_id == MSG_ROUTING_NONE) {
1731     embedded_worker_->SendMessage(
1732         ServiceWorkerMsg_NavigateClientError(request_id, GURL()));
1733     return;
1734   }
1735
1736   for (auto it =
1737            context_->GetClientProviderHostIterator(script_url_.GetOrigin());
1738        !it->IsAtEnd(); it->Advance()) {
1739     ServiceWorkerProviderHost* provider_host = it->GetProviderHost();
1740     if (provider_host->process_id() != render_process_id ||
1741         provider_host->frame_id() != render_frame_id) {
1742       continue;
1743     }
1744     provider_host->GetWindowClientInfo(base::Bind(
1745         &ServiceWorkerVersion::OnNavigateClientFinished,
1746         weak_factory_.GetWeakPtr(), request_id, provider_host->client_uuid()));
1747     return;
1748   }
1749
1750   OnNavigateClientFinished(request_id, std::string(),
1751                            ServiceWorkerClientInfo());
1752 }
1753
1754 void ServiceWorkerVersion::OnNavigateClientFinished(
1755     int request_id,
1756     const std::string& client_uuid,
1757     const ServiceWorkerClientInfo& client_info) {
1758   DCHECK_CURRENTLY_ON(BrowserThread::IO);
1759
1760   if (running_status() != RUNNING)
1761     return;
1762
1763   ServiceWorkerClientInfo client(client_info);
1764
1765   // If the |client_info| is empty, it means that the navigated client wasn't
1766   // controlled but the action still succeeded. The renderer process is
1767   // expecting an empty client in such case.
1768   if (!client.IsEmpty())
1769     client.client_uuid = client_uuid;
1770
1771   embedded_worker_->SendMessage(
1772       ServiceWorkerMsg_NavigateClientResponse(request_id, client));
1773 }
1774
1775 void ServiceWorkerVersion::OnSkipWaiting(int request_id) {
1776   skip_waiting_ = true;
1777   if (status_ != INSTALLED)
1778     return DidSkipWaiting(request_id);
1779
1780   if (!context_)
1781     return;
1782   ServiceWorkerRegistration* registration =
1783       context_->GetLiveRegistration(registration_id_);
1784   if (!registration)
1785     return;
1786   pending_skip_waiting_requests_.push_back(request_id);
1787   if (pending_skip_waiting_requests_.size() == 1)
1788     registration->ActivateWaitingVersionWhenReady();
1789 }
1790
1791 void ServiceWorkerVersion::DidSkipWaiting(int request_id) {
1792   if (running_status() == STARTING || running_status() == RUNNING)
1793     embedded_worker_->SendMessage(ServiceWorkerMsg_DidSkipWaiting(request_id));
1794 }
1795
1796 void ServiceWorkerVersion::OnClaimClients(int request_id) {
1797   if (status_ != ACTIVATING && status_ != ACTIVATED) {
1798     embedded_worker_->SendMessage(ServiceWorkerMsg_ClaimClientsError(
1799         request_id, blink::WebServiceWorkerError::ErrorTypeState,
1800         base::ASCIIToUTF16(kClaimClientsStateErrorMesage)));
1801     return;
1802   }
1803   if (context_) {
1804     if (ServiceWorkerRegistration* registration =
1805             context_->GetLiveRegistration(registration_id_)) {
1806       registration->ClaimClients();
1807       embedded_worker_->SendMessage(
1808           ServiceWorkerMsg_DidClaimClients(request_id));
1809       return;
1810     }
1811   }
1812
1813   embedded_worker_->SendMessage(ServiceWorkerMsg_ClaimClientsError(
1814       request_id, blink::WebServiceWorkerError::ErrorTypeAbort,
1815       base::ASCIIToUTF16(kClaimClientsShutdownErrorMesage)));
1816 }
1817
1818 void ServiceWorkerVersion::OnPongFromWorker() {
1819   ping_controller_->OnPongReceived();
1820 }
1821
1822 void ServiceWorkerVersion::DidEnsureLiveRegistrationForStartWorker(
1823     const StatusCallback& callback,
1824     ServiceWorkerStatusCode status,
1825     const scoped_refptr<ServiceWorkerRegistration>& protect) {
1826   if (status != SERVICE_WORKER_OK) {
1827     RecordStartWorkerResult(status);
1828     RunSoon(base::Bind(callback, SERVICE_WORKER_ERROR_START_WORKER_FAILED));
1829     return;
1830   }
1831   if (is_redundant()) {
1832     RecordStartWorkerResult(SERVICE_WORKER_ERROR_REDUNDANT);
1833     RunSoon(base::Bind(callback, SERVICE_WORKER_ERROR_REDUNDANT));
1834     return;
1835   }
1836
1837   MarkIfStale();
1838
1839   switch (running_status()) {
1840     case RUNNING:
1841       RunSoon(base::Bind(callback, SERVICE_WORKER_OK));
1842       return;
1843     case STOPPING:
1844     case STOPPED:
1845     case STARTING:
1846       if (start_callbacks_.empty()) {
1847         start_callbacks_.push_back(
1848             base::Bind(&ServiceWorkerVersion::RecordStartWorkerResult,
1849                        weak_factory_.GetWeakPtr()));
1850       }
1851       // Keep the live registration while starting the worker.
1852       start_callbacks_.push_back(
1853           base::Bind(&RunStartWorkerCallback, callback, protect));
1854       StartWorkerInternal();
1855       return;
1856   }
1857 }
1858
1859 void ServiceWorkerVersion::StartWorkerInternal() {
1860   if (!metrics_)
1861     metrics_.reset(new Metrics(this));
1862
1863   if (!timeout_timer_.IsRunning())
1864     StartTimeoutTimer();
1865   if (running_status() == STOPPED) {
1866     embedded_worker_->Start(
1867         version_id_, scope_, script_url_,
1868         base::Bind(&ServiceWorkerVersion::OnStartSentAndScriptEvaluated,
1869                    weak_factory_.GetWeakPtr()));
1870   }
1871 }
1872
1873 void ServiceWorkerVersion::GetWindowClients(
1874     int request_id,
1875     const ServiceWorkerClientQueryOptions& options) {
1876   DCHECK(options.client_type == blink::WebServiceWorkerClientTypeWindow ||
1877          options.client_type == blink::WebServiceWorkerClientTypeAll);
1878   const std::vector<base::Tuple<int, int, std::string>>& clients_info =
1879       GetWindowClientsInternal(options.include_uncontrolled);
1880
1881   if (clients_info.empty()) {
1882     DidGetWindowClients(request_id, options,
1883                         make_scoped_ptr(new ServiceWorkerClients));
1884     return;
1885   }
1886
1887   BrowserThread::PostTask(
1888       BrowserThread::UI, FROM_HERE,
1889       base::Bind(&OnGetWindowClientsFromUI, clients_info, script_url_,
1890                  base::Bind(&ServiceWorkerVersion::DidGetWindowClients,
1891                             weak_factory_.GetWeakPtr(), request_id, options)));
1892 }
1893
1894 const std::vector<base::Tuple<int, int, std::string>>
1895 ServiceWorkerVersion::GetWindowClientsInternal(bool include_uncontrolled) {
1896   std::vector<base::Tuple<int, int, std::string>> clients_info;
1897   if (!include_uncontrolled) {
1898     for (auto& controllee : controllee_map_)
1899       AddWindowClient(controllee.second, &clients_info);
1900   } else {
1901     for (auto it =
1902              context_->GetClientProviderHostIterator(script_url_.GetOrigin());
1903          !it->IsAtEnd(); it->Advance()) {
1904       AddWindowClient(it->GetProviderHost(), &clients_info);
1905     }
1906   }
1907   return clients_info;
1908 }
1909
1910 void ServiceWorkerVersion::DidGetWindowClients(
1911     int request_id,
1912     const ServiceWorkerClientQueryOptions& options,
1913     scoped_ptr<ServiceWorkerClients> clients) {
1914   DCHECK_CURRENTLY_ON(BrowserThread::IO);
1915   if (options.client_type == blink::WebServiceWorkerClientTypeAll)
1916     GetNonWindowClients(request_id, options, clients.get());
1917   OnGetClientsFinished(request_id, *clients);
1918 }
1919
1920 void ServiceWorkerVersion::GetNonWindowClients(
1921     int request_id,
1922     const ServiceWorkerClientQueryOptions& options,
1923     ServiceWorkerClients* clients) {
1924   if (!options.include_uncontrolled) {
1925     for (auto& controllee : controllee_map_) {
1926       AddNonWindowClient(controllee.second, options, clients);
1927     }
1928   } else {
1929     for (auto it =
1930              context_->GetClientProviderHostIterator(script_url_.GetOrigin());
1931          !it->IsAtEnd(); it->Advance()) {
1932       AddNonWindowClient(it->GetProviderHost(), options, clients);
1933     }
1934   }
1935 }
1936
1937 void ServiceWorkerVersion::StartTimeoutTimer() {
1938   DCHECK(!timeout_timer_.IsRunning());
1939
1940   if (embedded_worker_->devtools_attached()) {
1941     // Don't record the startup time metric once DevTools is attached.
1942     ClearTick(&start_time_);
1943     skip_recording_startup_time_ = true;
1944   } else {
1945     RestartTick(&start_time_);
1946     skip_recording_startup_time_ = false;
1947   }
1948
1949   ClearTick(&idle_time_);
1950
1951   // Ping will be activated in OnScriptLoaded.
1952   ping_controller_->Deactivate();
1953
1954   timeout_timer_.Start(FROM_HERE,
1955                        base::TimeDelta::FromSeconds(kTimeoutTimerDelaySeconds),
1956                        this, &ServiceWorkerVersion::OnTimeoutTimer);
1957 }
1958
1959 void ServiceWorkerVersion::StopTimeoutTimer() {
1960   timeout_timer_.Stop();
1961
1962   // Trigger update if worker is stale.
1963   if (!stale_time_.is_null()) {
1964     ClearTick(&stale_time_);
1965     if (!update_timer_.IsRunning())
1966       ScheduleUpdate();
1967   }
1968 }
1969
1970 void ServiceWorkerVersion::OnTimeoutTimer() {
1971   DCHECK(running_status() == STARTING || running_status() == RUNNING ||
1972          running_status() == STOPPING)
1973       << running_status();
1974
1975   MarkIfStale();
1976
1977   if (GetTickDuration(stop_time_) >
1978       base::TimeDelta::FromSeconds(kStopWorkerTimeoutSeconds)) {
1979     metrics_->NotifyStalledInStopping();
1980   }
1981
1982   // Trigger update if worker is stale and we waited long enough for it to go
1983   // idle.
1984   if (GetTickDuration(stale_time_) >
1985       base::TimeDelta::FromMinutes(kRequestTimeoutMinutes)) {
1986     ClearTick(&stale_time_);
1987     if (!update_timer_.IsRunning())
1988       ScheduleUpdate();
1989   }
1990
1991   // Starting a worker hasn't finished within a certain period.
1992   if (GetTickDuration(start_time_) >
1993       base::TimeDelta::FromMinutes(kStartWorkerTimeoutMinutes)) {
1994     DCHECK(running_status() == STARTING || running_status() == STOPPING)
1995         << running_status();
1996     scoped_refptr<ServiceWorkerVersion> protect(this);
1997     RunCallbacks(this, &start_callbacks_, SERVICE_WORKER_ERROR_TIMEOUT);
1998     if (running_status() == STARTING)
1999       embedded_worker_->Stop();
2000     return;
2001   }
2002
2003   // Requests have not finished within a certain period.
2004   bool request_timed_out = false;
2005   while (!requests_.empty()) {
2006     RequestInfo info = requests_.front();
2007     if (GetTickDuration(info.time) <
2008         base::TimeDelta::FromMinutes(kRequestTimeoutMinutes))
2009       break;
2010     if (OnRequestTimeout(info))
2011       request_timed_out = true;
2012     requests_.pop();
2013   }
2014   if (request_timed_out && running_status() != STOPPING)
2015     embedded_worker_->Stop();
2016
2017   // For the timeouts below, there are no callbacks to timeout so there is
2018   // nothing more to do if the worker is already stopping.
2019   if (running_status() == STOPPING)
2020     return;
2021
2022   // The worker has been idle for longer than a certain period.
2023   if (GetTickDuration(idle_time_) >
2024       base::TimeDelta::FromSeconds(kIdleWorkerTimeoutSeconds)) {
2025     StopWorkerIfIdle();
2026     return;
2027   }
2028
2029   // Check ping status.
2030   ping_controller_->CheckPingStatus();
2031 }
2032
2033 ServiceWorkerStatusCode ServiceWorkerVersion::PingWorker() {
2034   DCHECK(running_status() == STARTING || running_status() == RUNNING);
2035   return embedded_worker_->SendMessage(ServiceWorkerMsg_Ping());
2036 }
2037
2038 void ServiceWorkerVersion::OnPingTimeout() {
2039   DCHECK(running_status() == STARTING || running_status() == RUNNING);
2040   // TODO(falken): Show a message to the developer that the SW was stopped due
2041   // to timeout (crbug.com/457968). Also, change the error code to
2042   // SERVICE_WORKER_ERROR_TIMEOUT.
2043   StopWorkerIfIdle();
2044 }
2045
2046 void ServiceWorkerVersion::StopWorkerIfIdle() {
2047   if (HasInflightRequests() && !ping_controller_->IsTimedOut())
2048     return;
2049   if (running_status() == STOPPED || running_status() == STOPPING ||
2050       !stop_callbacks_.empty()) {
2051     return;
2052   }
2053
2054   // TODO(falken): We may need to handle StopIfIdle failure and
2055   // forcibly fail pending callbacks so no one is stuck waiting
2056   // for the worker.
2057   embedded_worker_->StopIfIdle();
2058 }
2059
2060 bool ServiceWorkerVersion::HasInflightRequests() const {
2061   return !activate_requests_.IsEmpty() || !install_requests_.IsEmpty() ||
2062          !fetch_requests_.IsEmpty() || !sync_requests_.IsEmpty() ||
2063          !notification_click_requests_.IsEmpty() || !push_requests_.IsEmpty() ||
2064          !geofencing_requests_.IsEmpty() ||
2065          !service_port_connect_requests_.IsEmpty() ||
2066          !streaming_url_request_jobs_.empty();
2067 }
2068
2069 void ServiceWorkerVersion::RecordStartWorkerResult(
2070     ServiceWorkerStatusCode status) {
2071   base::TimeTicks start_time = start_time_;
2072   ClearTick(&start_time_);
2073
2074   ServiceWorkerMetrics::RecordStartWorkerStatus(status,
2075                                                 IsInstalled(prestart_status_));
2076
2077   if (status == SERVICE_WORKER_OK && !start_time.is_null() &&
2078       !skip_recording_startup_time_) {
2079     ServiceWorkerMetrics::RecordStartWorkerTime(GetTickDuration(start_time),
2080                                                 IsInstalled(prestart_status_));
2081   }
2082
2083   if (status != SERVICE_WORKER_ERROR_TIMEOUT)
2084     return;
2085   EmbeddedWorkerInstance::StartingPhase phase =
2086       EmbeddedWorkerInstance::NOT_STARTING;
2087   EmbeddedWorkerInstance::Status running_status = embedded_worker_->status();
2088   // Build an artifical JavaScript exception to show in the ServiceWorker
2089   // log for developers; it's not user-facing so it's not a localized resource.
2090   std::string message = "ServiceWorker startup timed out. ";
2091   if (running_status != EmbeddedWorkerInstance::STARTING) {
2092     message.append("The worker had unexpected status: ");
2093     message.append(EmbeddedWorkerInstance::StatusToString(running_status));
2094   } else {
2095     phase = embedded_worker_->starting_phase();
2096     message.append("The worker was in startup phase: ");
2097     message.append(EmbeddedWorkerInstance::StartingPhaseToString(phase));
2098   }
2099   message.append(".");
2100   OnReportException(base::UTF8ToUTF16(message), -1, -1, GURL());
2101   DVLOG(1) << message;
2102   UMA_HISTOGRAM_ENUMERATION("ServiceWorker.StartWorker.TimeoutPhase",
2103                             phase,
2104                             EmbeddedWorkerInstance::STARTING_PHASE_MAX_VALUE);
2105 }
2106
2107 template <typename IDMAP>
2108 void ServiceWorkerVersion::RemoveCallbackAndStopIfRedundant(IDMAP* callbacks,
2109                                                             int request_id) {
2110   RestartTick(&idle_time_);
2111   callbacks->Remove(request_id);
2112   if (is_redundant()) {
2113     // The stop should be already scheduled, but try to stop immediately, in
2114     // order to release worker resources soon.
2115     StopWorkerIfIdle();
2116   }
2117 }
2118
2119 template <typename CallbackType>
2120 int ServiceWorkerVersion::AddRequest(
2121     const CallbackType& callback,
2122     IDMap<PendingRequest<CallbackType>, IDMapOwnPointer>* callback_map,
2123     RequestType request_type) {
2124   base::TimeTicks now = base::TimeTicks::Now();
2125   int request_id =
2126       callback_map->Add(new PendingRequest<CallbackType>(callback, now));
2127   requests_.push(RequestInfo(request_id, request_type, now));
2128   return request_id;
2129 }
2130
2131 bool ServiceWorkerVersion::OnRequestTimeout(const RequestInfo& info) {
2132   switch (info.type) {
2133     case REQUEST_ACTIVATE:
2134       return RunIDMapCallback(&activate_requests_, info.id,
2135                               SERVICE_WORKER_ERROR_TIMEOUT);
2136     case REQUEST_INSTALL:
2137       return RunIDMapCallback(&install_requests_, info.id,
2138                               SERVICE_WORKER_ERROR_TIMEOUT);
2139     case REQUEST_FETCH:
2140       return RunIDMapCallback(
2141           &fetch_requests_, info.id, SERVICE_WORKER_ERROR_TIMEOUT,
2142           /* The other args are ignored for non-OK status. */
2143           SERVICE_WORKER_FETCH_EVENT_RESULT_FALLBACK, ServiceWorkerResponse());
2144     case REQUEST_SYNC:
2145       return RunIDMapCallback(&sync_requests_, info.id,
2146                               SERVICE_WORKER_ERROR_TIMEOUT);
2147     case REQUEST_NOTIFICATION_CLICK:
2148       return RunIDMapCallback(&notification_click_requests_, info.id,
2149                               SERVICE_WORKER_ERROR_TIMEOUT);
2150     case REQUEST_PUSH:
2151       return RunIDMapCallback(&push_requests_, info.id,
2152                               SERVICE_WORKER_ERROR_TIMEOUT);
2153     case REQUEST_GEOFENCING:
2154       return RunIDMapCallback(&geofencing_requests_, info.id,
2155                               SERVICE_WORKER_ERROR_TIMEOUT);
2156     case REQUEST_SERVICE_PORT_CONNECT:
2157       return RunIDMapCallback(&service_port_connect_requests_, info.id,
2158                               SERVICE_WORKER_ERROR_TIMEOUT,
2159                               false /* accept_connection */, base::string16(),
2160                               base::string16());
2161   }
2162   NOTREACHED() << "Got unexpected request type: " << info.type;
2163   return false;
2164 }
2165
2166 void ServiceWorkerVersion::SetAllRequestTimes(const base::TimeTicks& ticks) {
2167   std::queue<RequestInfo> new_requests;
2168   while (!requests_.empty()) {
2169     RequestInfo info = requests_.front();
2170     info.time = ticks;
2171     new_requests.push(info);
2172     requests_.pop();
2173   }
2174   requests_ = new_requests;
2175 }
2176
2177 ServiceWorkerStatusCode ServiceWorkerVersion::DeduceStartWorkerFailureReason(
2178     ServiceWorkerStatusCode default_code) {
2179   if (ping_controller_->IsTimedOut())
2180     return SERVICE_WORKER_ERROR_TIMEOUT;
2181
2182   if (start_worker_status_ != SERVICE_WORKER_OK)
2183     return start_worker_status_;
2184
2185   const net::URLRequestStatus& main_script_status =
2186       script_cache_map()->main_script_status();
2187   if (main_script_status.status() != net::URLRequestStatus::SUCCESS) {
2188     switch (main_script_status.error()) {
2189       case net::ERR_INSECURE_RESPONSE:
2190       case net::ERR_UNSAFE_REDIRECT:
2191         return SERVICE_WORKER_ERROR_SECURITY;
2192       case net::ERR_ABORTED:
2193         return SERVICE_WORKER_ERROR_ABORT;
2194       default:
2195         return SERVICE_WORKER_ERROR_NETWORK;
2196     }
2197   }
2198
2199   return default_code;
2200 }
2201
2202 void ServiceWorkerVersion::MarkIfStale() {
2203   if (!context_)
2204     return;
2205   if (update_timer_.IsRunning() || !stale_time_.is_null())
2206     return;
2207   ServiceWorkerRegistration* registration =
2208       context_->GetLiveRegistration(registration_id_);
2209   if (!registration || registration->active_version() != this)
2210     return;
2211   base::TimeDelta time_since_last_check =
2212       base::Time::Now() - registration->last_update_check();
2213   if (time_since_last_check >
2214       base::TimeDelta::FromHours(kServiceWorkerScriptMaxCacheAgeInHours))
2215     RestartTick(&stale_time_);
2216 }
2217
2218 void ServiceWorkerVersion::FoundRegistrationForUpdate(
2219     ServiceWorkerStatusCode status,
2220     const scoped_refptr<ServiceWorkerRegistration>& registration) {
2221   if (!context_)
2222     return;
2223
2224   const scoped_refptr<ServiceWorkerVersion> protect = this;
2225   if (is_update_scheduled_) {
2226     context_->UnprotectVersion(version_id_);
2227     is_update_scheduled_ = false;
2228   }
2229
2230   if (status != SERVICE_WORKER_OK || registration->active_version() != this)
2231     return;
2232   context_->UpdateServiceWorker(registration.get(),
2233                                 false /* force_bypass_cache */);
2234 }
2235
2236 void ServiceWorkerVersion::OnStoppedInternal(
2237     EmbeddedWorkerInstance::Status old_status) {
2238   DCHECK_EQ(STOPPED, running_status());
2239   scoped_refptr<ServiceWorkerVersion> protect(this);
2240
2241   DCHECK(metrics_);
2242   metrics_.reset();
2243
2244   bool should_restart = !is_redundant() && !start_callbacks_.empty() &&
2245                         (old_status != EmbeddedWorkerInstance::STARTING);
2246
2247   ClearTick(&stop_time_);
2248   StopTimeoutTimer();
2249
2250   if (ping_controller_->IsTimedOut())
2251     should_restart = false;
2252
2253   // Fire all stop callbacks.
2254   RunCallbacks(this, &stop_callbacks_, SERVICE_WORKER_OK);
2255
2256   if (!should_restart) {
2257     // Let all start callbacks fail.
2258     RunCallbacks(this, &start_callbacks_,
2259                  DeduceStartWorkerFailureReason(
2260                      SERVICE_WORKER_ERROR_START_WORKER_FAILED));
2261   }
2262
2263   // Let all message callbacks fail (this will also fire and clear all
2264   // callbacks for events).
2265   // TODO(kinuko): Consider if we want to add queue+resend mechanism here.
2266   RunIDMapCallbacks(&activate_requests_,
2267                     SERVICE_WORKER_ERROR_ACTIVATE_WORKER_FAILED);
2268   RunIDMapCallbacks(&install_requests_,
2269                     SERVICE_WORKER_ERROR_INSTALL_WORKER_FAILED);
2270   RunIDMapCallbacks(&fetch_requests_, SERVICE_WORKER_ERROR_FAILED,
2271                     SERVICE_WORKER_FETCH_EVENT_RESULT_FALLBACK,
2272                     ServiceWorkerResponse());
2273   RunIDMapCallbacks(&sync_requests_, SERVICE_WORKER_ERROR_FAILED);
2274   RunIDMapCallbacks(&notification_click_requests_, SERVICE_WORKER_ERROR_FAILED);
2275   RunIDMapCallbacks(&push_requests_, SERVICE_WORKER_ERROR_FAILED);
2276   RunIDMapCallbacks(&geofencing_requests_, SERVICE_WORKER_ERROR_FAILED);
2277
2278   // Close all mojo services. This will also fire and clear all callbacks
2279   // for messages that are still outstanding for those services.
2280   OnServicePortDispatcherConnectionError();
2281
2282   OnBackgroundSyncDispatcherConnectionError();
2283
2284   streaming_url_request_jobs_.clear();
2285
2286   FOR_EACH_OBSERVER(Listener, listeners_, OnRunningStateChanged(this));
2287
2288   if (should_restart)
2289     StartWorkerInternal();
2290 }
2291
2292 void ServiceWorkerVersion::OnServicePortDispatcherConnectionError() {
2293   RunIDMapCallbacks(&service_port_connect_requests_,
2294                     SERVICE_WORKER_ERROR_FAILED, false, base::string16(),
2295                     base::string16());
2296   service_port_dispatcher_.reset();
2297 }
2298
2299 void ServiceWorkerVersion::OnBackgroundSyncDispatcherConnectionError() {
2300   RunIDMapCallbacks(&sync_requests_, SERVICE_WORKER_ERROR_FAILED);
2301   background_sync_dispatcher_.reset();
2302 }
2303
2304 }  // namespace content