content/child/web_url_loader_impl.cc

   1 // Copyright 2014 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/child/web_url_loader_impl.h"
   6
   7 #include <algorithm>
   8 #include <string>
   9
  10 #include "base/bind.h"
  11 #include "base/command_line.h"
  12 #include "base/files/file_path.h"
  13 #include "base/logging.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/single_thread_task_runner.h"
  16 #include "base/strings/string_util.h"
  17 #include "base/time/time.h"
  18 #include "components/mime_util/mime_util.h"
  19 #include "content/child/child_thread_impl.h"
  20 #include "content/child/ftp_directory_listing_response_delegate.h"
  21 #include "content/child/multipart_response_delegate.h"
  22 #include "content/child/request_extra_data.h"
  23 #include "content/child/request_info.h"
  24 #include "content/child/resource_dispatcher.h"
  25 #include "content/child/shared_memory_data_consumer_handle.h"
  26 #include "content/child/sync_load_response.h"
  27 #include "content/child/web_url_request_util.h"
  28 #include "content/child/weburlresponse_extradata_impl.h"
  29 #include "content/common/resource_messages.h"
  30 #include "content/common/resource_request_body.h"
  31 #include "content/common/service_worker/service_worker_types.h"
  32 #include "content/common/ssl_status_serialization.h"
  33 #include "content/public/child/fixed_received_data.h"
  34 #include "content/public/child/request_peer.h"
  35 #include "content/public/common/content_switches.h"
  36 #include "net/base/data_url.h"
  37 #include "net/base/filename_util.h"
  38 #include "net/base/net_errors.h"
  39 #include "net/http/http_response_headers.h"
  40 #include "net/http/http_util.h"
  41 #include "net/ssl/ssl_cipher_suite_names.h"
  42 #include "net/ssl/ssl_connection_status_flags.h"
  43 #include "net/url_request/redirect_info.h"
  44 #include "net/url_request/url_request_data_job.h"
  45 #include "third_party/WebKit/public/platform/WebHTTPLoadInfo.h"
  46 #include "third_party/WebKit/public/platform/WebURL.h"
  47 #include "third_party/WebKit/public/platform/WebURLError.h"
  48 #include "third_party/WebKit/public/platform/WebURLLoadTiming.h"
  49 #include "third_party/WebKit/public/platform/WebURLLoaderClient.h"
  50 #include "third_party/WebKit/public/platform/WebURLRequest.h"
  51 #include "third_party/WebKit/public/platform/WebURLResponse.h"
  52 #include "third_party/WebKit/public/web/WebSecurityPolicy.h"
  53
  54 using base::Time;
  55 using base::TimeTicks;
  56 using blink::WebData;
  57 using blink::WebHTTPBody;
  58 using blink::WebHTTPHeaderVisitor;
  59 using blink::WebHTTPLoadInfo;
  60 using blink::WebReferrerPolicy;
  61 using blink::WebSecurityPolicy;
  62 using blink::WebString;
  63 using blink::WebURL;
  64 using blink::WebURLError;
  65 using blink::WebURLLoadTiming;
  66 using blink::WebURLLoader;
  67 using blink::WebURLLoaderClient;
  68 using blink::WebURLRequest;
  69 using blink::WebURLResponse;
  70
  71 namespace content {
  72
  73 // Utilities ------------------------------------------------------------------
  74
  75 namespace {
  76
  77 using HeadersVector = ResourceDevToolsInfo::HeadersVector;
  78
  79 // Converts timing data from |load_timing| to the format used by WebKit.
  80 void PopulateURLLoadTiming(const net::LoadTimingInfo& load_timing,
  81                            WebURLLoadTiming* url_timing) {
  82   DCHECK(!load_timing.request_start.is_null());
  83
  84   const TimeTicks kNullTicks;
  85   url_timing->initialize();
  86   url_timing->setRequestTime(
  87       (load_timing.request_start - kNullTicks).InSecondsF());
  88   url_timing->setProxyStart(
  89       (load_timing.proxy_resolve_start - kNullTicks).InSecondsF());
  90   url_timing->setProxyEnd(
  91       (load_timing.proxy_resolve_end - kNullTicks).InSecondsF());
  92   url_timing->setDNSStart(
  93       (load_timing.connect_timing.dns_start - kNullTicks).InSecondsF());
  94   url_timing->setDNSEnd(
  95       (load_timing.connect_timing.dns_end - kNullTicks).InSecondsF());
  96   url_timing->setConnectStart(
  97       (load_timing.connect_timing.connect_start - kNullTicks).InSecondsF());
  98   url_timing->setConnectEnd(
  99       (load_timing.connect_timing.connect_end - kNullTicks).InSecondsF());
 100   url_timing->setSSLStart(
 101       (load_timing.connect_timing.ssl_start - kNullTicks).InSecondsF());
 102   url_timing->setSSLEnd(
 103       (load_timing.connect_timing.ssl_end - kNullTicks).InSecondsF());
 104   url_timing->setSendStart(
 105       (load_timing.send_start - kNullTicks).InSecondsF());
 106   url_timing->setSendEnd(
 107       (load_timing.send_end - kNullTicks).InSecondsF());
 108   url_timing->setReceiveHeadersEnd(
 109       (load_timing.receive_headers_end - kNullTicks).InSecondsF());
 110 }
 111
 112 net::RequestPriority ConvertWebKitPriorityToNetPriority(
 113     const WebURLRequest::Priority& priority) {
 114   switch (priority) {
 115     case WebURLRequest::PriorityVeryHigh:
 116       return net::HIGHEST;
 117
 118     case WebURLRequest::PriorityHigh:
 119       return net::MEDIUM;
 120
 121     case WebURLRequest::PriorityMedium:
 122       return net::LOW;
 123
 124     case WebURLRequest::PriorityLow:
 125       return net::LOWEST;
 126
 127     case WebURLRequest::PriorityVeryLow:
 128       return net::IDLE;
 129
 130     case WebURLRequest::PriorityUnresolved:
 131     default:
 132       NOTREACHED();
 133       return net::LOW;
 134   }
 135 }
 136
 137 // Extracts info from a data scheme URL |url| into |info| and |data|. Returns
 138 // net::OK if successful. Returns a net error code otherwise.
 139 int GetInfoFromDataURL(const GURL& url,
 140                        ResourceResponseInfo* info,
 141                        std::string* data) {
 142   // Assure same time for all time fields of data: URLs.
 143   Time now = Time::Now();
 144   info->load_timing.request_start = TimeTicks::Now();
 145   info->load_timing.request_start_time = now;
 146   info->request_time = now;
 147   info->response_time = now;
 148
 149   std::string mime_type;
 150   std::string charset;
 151   scoped_refptr<net::HttpResponseHeaders> headers(
 152       new net::HttpResponseHeaders(std::string()));
 153   int result = net::URLRequestDataJob::BuildResponse(
 154       url, &mime_type, &charset, data, headers.get());
 155   if (result != net::OK)
 156     return result;
 157
 158   info->headers = headers;
 159   info->mime_type.swap(mime_type);
 160   info->charset.swap(charset);
 161   info->security_info.clear();
 162   info->content_length = data->length();
 163   info->encoded_data_length = 0;
 164
 165   return net::OK;
 166 }
 167
 168 #define STATIC_ASSERT_MATCHING_ENUMS(content_name, blink_name)       \
 169   static_assert(                                                     \
 170       static_cast<int>(content_name) == static_cast<int>(blink_name), \
 171       "mismatching enums: " #content_name)
 172
 173 STATIC_ASSERT_MATCHING_ENUMS(FETCH_REQUEST_MODE_SAME_ORIGIN,
 174                              WebURLRequest::FetchRequestModeSameOrigin);
 175 STATIC_ASSERT_MATCHING_ENUMS(FETCH_REQUEST_MODE_NO_CORS,
 176                              WebURLRequest::FetchRequestModeNoCORS);
 177 STATIC_ASSERT_MATCHING_ENUMS(FETCH_REQUEST_MODE_CORS,
 178                              WebURLRequest::FetchRequestModeCORS);
 179 STATIC_ASSERT_MATCHING_ENUMS(
 180     FETCH_REQUEST_MODE_CORS_WITH_FORCED_PREFLIGHT,
 181     WebURLRequest::FetchRequestModeCORSWithForcedPreflight);
 182
 183 FetchRequestMode GetFetchRequestMode(const WebURLRequest& request) {
 184   return static_cast<FetchRequestMode>(request.fetchRequestMode());
 185 }
 186
 187 STATIC_ASSERT_MATCHING_ENUMS(FETCH_CREDENTIALS_MODE_OMIT,
 188                              WebURLRequest::FetchCredentialsModeOmit);
 189 STATIC_ASSERT_MATCHING_ENUMS(FETCH_CREDENTIALS_MODE_SAME_ORIGIN,
 190                              WebURLRequest::FetchCredentialsModeSameOrigin);
 191 STATIC_ASSERT_MATCHING_ENUMS(FETCH_CREDENTIALS_MODE_INCLUDE,
 192                              WebURLRequest::FetchCredentialsModeInclude);
 193
 194 FetchCredentialsMode GetFetchCredentialsMode(const WebURLRequest& request) {
 195   return static_cast<FetchCredentialsMode>(request.fetchCredentialsMode());
 196 }
 197
 198 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_FRAME_TYPE_AUXILIARY,
 199                              WebURLRequest::FrameTypeAuxiliary);
 200 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_FRAME_TYPE_NESTED,
 201                              WebURLRequest::FrameTypeNested);
 202 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_FRAME_TYPE_NONE,
 203                              WebURLRequest::FrameTypeNone);
 204 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_FRAME_TYPE_TOP_LEVEL,
 205                              WebURLRequest::FrameTypeTopLevel);
 206
 207 RequestContextFrameType GetRequestContextFrameType(
 208     const WebURLRequest& request) {
 209   return static_cast<RequestContextFrameType>(request.frameType());
 210 }
 211
 212 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_UNSPECIFIED,
 213                              WebURLRequest::RequestContextUnspecified);
 214 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_AUDIO,
 215                              WebURLRequest::RequestContextAudio);
 216 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_BEACON,
 217                              WebURLRequest::RequestContextBeacon);
 218 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_CSP_REPORT,
 219                              WebURLRequest::RequestContextCSPReport);
 220 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_DOWNLOAD,
 221                              WebURLRequest::RequestContextDownload);
 222 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_EMBED,
 223                              WebURLRequest::RequestContextEmbed);
 224 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_EVENT_SOURCE,
 225                              WebURLRequest::RequestContextEventSource);
 226 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_FAVICON,
 227                              WebURLRequest::RequestContextFavicon);
 228 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_FETCH,
 229                              WebURLRequest::RequestContextFetch);
 230 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_FONT,
 231                              WebURLRequest::RequestContextFont);
 232 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_FORM,
 233                              WebURLRequest::RequestContextForm);
 234 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_FRAME,
 235                              WebURLRequest::RequestContextFrame);
 236 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_HYPERLINK,
 237                              WebURLRequest::RequestContextHyperlink);
 238 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_IFRAME,
 239                              WebURLRequest::RequestContextIframe);
 240 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_IMAGE,
 241                              WebURLRequest::RequestContextImage);
 242 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_IMAGE_SET,
 243                              WebURLRequest::RequestContextImageSet);
 244 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_IMPORT,
 245                              WebURLRequest::RequestContextImport);
 246 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_INTERNAL,
 247                              WebURLRequest::RequestContextInternal);
 248 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_LOCATION,
 249                              WebURLRequest::RequestContextLocation);
 250 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_MANIFEST,
 251                              WebURLRequest::RequestContextManifest);
 252 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_OBJECT,
 253                              WebURLRequest::RequestContextObject);
 254 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_PING,
 255                              WebURLRequest::RequestContextPing);
 256 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_PLUGIN,
 257                              WebURLRequest::RequestContextPlugin);
 258 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_PREFETCH,
 259                              WebURLRequest::RequestContextPrefetch);
 260 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_SCRIPT,
 261                              WebURLRequest::RequestContextScript);
 262 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_SERVICE_WORKER,
 263                              WebURLRequest::RequestContextServiceWorker);
 264 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_SHARED_WORKER,
 265                              WebURLRequest::RequestContextSharedWorker);
 266 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_SUBRESOURCE,
 267                              WebURLRequest::RequestContextSubresource);
 268 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_STYLE,
 269                              WebURLRequest::RequestContextStyle);
 270 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_TRACK,
 271                              WebURLRequest::RequestContextTrack);
 272 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_VIDEO,
 273                              WebURLRequest::RequestContextVideo);
 274 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_WORKER,
 275                              WebURLRequest::RequestContextWorker);
 276 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_XML_HTTP_REQUEST,
 277                              WebURLRequest::RequestContextXMLHttpRequest);
 278 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_XSLT,
 279                              WebURLRequest::RequestContextXSLT);
 280
 281 RequestContextType GetRequestContextType(const WebURLRequest& request) {
 282   return static_cast<RequestContextType>(request.requestContext());
 283 }
 284
 285 void SetSecurityStyleAndDetails(const GURL& url,
 286                                 const std::string& security_info,
 287                                 WebURLResponse* response,
 288                                 bool report_security_info) {
 289   if (!report_security_info) {
 290     response->setSecurityStyle(WebURLResponse::SecurityStyleUnknown);
 291     return;
 292   }
 293   if (!url.SchemeIsCryptographic()) {
 294     response->setSecurityStyle(WebURLResponse::SecurityStyleUnauthenticated);
 295     return;
 296   }
 297
 298   // There are cases where an HTTPS request can come in without security
 299   // info attached (such as a redirect response).
 300   if (security_info.empty()) {
 301     response->setSecurityStyle(WebURLResponse::SecurityStyleUnknown);
 302     return;
 303   }
 304
 305   SSLStatus ssl_status;
 306   if (!DeserializeSecurityInfo(security_info, &ssl_status)) {
 307     response->setSecurityStyle(WebURLResponse::SecurityStyleUnknown);
 308     DLOG(ERROR)
 309         << "DeserializeSecurityInfo() failed for an authenticated request.";
 310     return;
 311   }
 312
 313   int ssl_version =
 314       net::SSLConnectionStatusToVersion(ssl_status.connection_status);
 315   const char* protocol;
 316   net::SSLVersionToString(&protocol, ssl_version);
 317
 318   const char* key_exchange;
 319   const char* cipher;
 320   const char* mac;
 321   bool is_aead;
 322   uint16_t cipher_suite =
 323       net::SSLConnectionStatusToCipherSuite(ssl_status.connection_status);
 324   net::SSLCipherSuiteToStrings(&key_exchange, &cipher, &mac, &is_aead,
 325                                cipher_suite);
 326   if (mac == NULL) {
 327     DCHECK(is_aead);
 328     mac = "";
 329   }
 330
 331   blink::WebURLResponse::SecurityStyle securityStyle =
 332       WebURLResponse::SecurityStyleUnknown;
 333   switch (ssl_status.security_style) {
 334     case SECURITY_STYLE_UNKNOWN:
 335       securityStyle = WebURLResponse::SecurityStyleUnknown;
 336       break;
 337     case SECURITY_STYLE_UNAUTHENTICATED:
 338       securityStyle = WebURLResponse::SecurityStyleUnauthenticated;
 339       break;
 340     case SECURITY_STYLE_AUTHENTICATION_BROKEN:
 341       securityStyle = WebURLResponse::SecurityStyleAuthenticationBroken;
 342       break;
 343     case SECURITY_STYLE_WARNING:
 344       securityStyle = WebURLResponse::SecurityStyleWarning;
 345       break;
 346     case SECURITY_STYLE_AUTHENTICATED:
 347       securityStyle = WebURLResponse::SecurityStyleAuthenticated;
 348       break;
 349   }
 350
 351   response->setSecurityStyle(securityStyle);
 352
 353   blink::WebString protocol_string = blink::WebString::fromUTF8(protocol);
 354   blink::WebString cipher_string = blink::WebString::fromUTF8(cipher);
 355   blink::WebString key_exchange_string =
 356       blink::WebString::fromUTF8(key_exchange);
 357   blink::WebString mac_string = blink::WebString::fromUTF8(mac);
 358   response->setSecurityDetails(protocol_string, cipher_string,
 359                                key_exchange_string, mac_string,
 360                                ssl_status.cert_id);
 361 }
 362
 363 }  // namespace
 364
 365 // WebURLLoaderImpl::Context --------------------------------------------------
 366
 367 // This inner class exists since the WebURLLoader may be deleted while inside a
 368 // call to WebURLLoaderClient.  Refcounting is to keep the context from being
 369 // deleted if it may have work to do after calling into the client.
 370 class WebURLLoaderImpl::Context : public base::RefCounted<Context>,
 371                                   public RequestPeer {
 372  public:
 373   Context(WebURLLoaderImpl* loader,
 374           ResourceDispatcher* resource_dispatcher,
 375           scoped_refptr<base::SingleThreadTaskRunner> task_runner);
 376
 377   WebURLLoaderClient* client() const { return client_; }
 378   void set_client(WebURLLoaderClient* client) { client_ = client; }
 379
 380   void Cancel();
 381   void SetDefersLoading(bool value);
 382   void DidChangePriority(WebURLRequest::Priority new_priority,
 383                          int intra_priority_value);
 384   bool AttachThreadedDataReceiver(
 385       blink::WebThreadedDataReceiver* threaded_data_receiver);
 386   void Start(const WebURLRequest& request,
 387              SyncLoadResponse* sync_load_response);
 388
 389   // RequestPeer methods:
 390   void OnUploadProgress(uint64 position, uint64 size) override;
 391   bool OnReceivedRedirect(const net::RedirectInfo& redirect_info,
 392                           const ResourceResponseInfo& info) override;
 393   void OnReceivedResponse(const ResourceResponseInfo& info) override;
 394   void OnDownloadedData(int len, int encoded_data_length) override;
 395   void OnReceivedData(scoped_ptr<ReceivedData> data) override;
 396   void OnReceivedCachedMetadata(const char* data, int len) override;
 397   void OnCompletedRequest(int error_code,
 398                           bool was_ignored_by_handler,
 399                           bool stale_copy_in_cache,
 400                           const std::string& security_info,
 401                           const base::TimeTicks& completion_time,
 402                           int64 total_transfer_size) override;
 403   void OnReceivedCompletedResponse(const ResourceResponseInfo& info,
 404                                    scoped_ptr<ReceivedData> data,
 405                                    int error_code,
 406                                    bool was_ignored_by_handler,
 407                                    bool stale_copy_in_cache,
 408                                    const std::string& security_info,
 409                                    const base::TimeTicks& completion_time,
 410                                    int64 total_transfer_size) override;
 411
 412  private:
 413   friend class base::RefCounted<Context>;
 414   ~Context() override;
 415
 416   // Called when the body data stream is detached from the reader side.
 417   void CancelBodyStreaming();
 418   // We can optimize the handling of data URLs in most cases.
 419   bool CanHandleDataURLRequestLocally() const;
 420   void HandleDataURL();
 421
 422   WebURLLoaderImpl* loader_;
 423   WebURLRequest request_;
 424   WebURLLoaderClient* client_;
 425   ResourceDispatcher* resource_dispatcher_;
 426   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 427   WebReferrerPolicy referrer_policy_;
 428   scoped_ptr<FtpDirectoryListingResponseDelegate> ftp_listing_delegate_;
 429   scoped_ptr<MultipartResponseDelegate> multipart_delegate_;
 430   scoped_ptr<StreamOverrideParameters> stream_override_;
 431   scoped_ptr<SharedMemoryDataConsumerHandle::Writer> body_stream_writer_;
 432   enum DeferState {NOT_DEFERRING, SHOULD_DEFER, DEFERRED_DATA};
 433   DeferState defers_loading_;
 434   int request_id_;
 435 };
 436
 437 WebURLLoaderImpl::Context::Context(
 438     WebURLLoaderImpl* loader,
 439     ResourceDispatcher* resource_dispatcher,
 440     scoped_refptr<base::SingleThreadTaskRunner> task_runner)
 441     : loader_(loader),
 442       client_(NULL),
 443       resource_dispatcher_(resource_dispatcher),
 444       task_runner_(task_runner),
 445       referrer_policy_(blink::WebReferrerPolicyDefault),
 446       defers_loading_(NOT_DEFERRING),
 447       request_id_(-1) {
 448 }
 449
 450 void WebURLLoaderImpl::Context::Cancel() {
 451   if (resource_dispatcher_ && // NULL in unittest.
 452       request_id_ != -1) {
 453     resource_dispatcher_->Cancel(request_id_);
 454     request_id_ = -1;
 455   }
 456
 457   if (body_stream_writer_)
 458     body_stream_writer_->Fail();
 459
 460   // Ensure that we do not notify the multipart delegate anymore as it has
 461   // its own pointer to the client.
 462   if (multipart_delegate_)
 463     multipart_delegate_->Cancel();
 464   // Ditto for the ftp delegate.
 465   if (ftp_listing_delegate_)
 466     ftp_listing_delegate_->Cancel();
 467
 468   // Do not make any further calls to the client.
 469   client_ = NULL;
 470   loader_ = NULL;
 471 }
 472
 473 void WebURLLoaderImpl::Context::SetDefersLoading(bool value) {
 474   if (request_id_ != -1)
 475     resource_dispatcher_->SetDefersLoading(request_id_, value);
 476   if (value && defers_loading_ == NOT_DEFERRING) {
 477     defers_loading_ = SHOULD_DEFER;
 478   } else if (!value && defers_loading_ != NOT_DEFERRING) {
 479     if (defers_loading_ == DEFERRED_DATA) {
 480       task_runner_->PostTask(FROM_HERE,
 481                              base::Bind(&Context::HandleDataURL, this));
 482     }
 483     defers_loading_ = NOT_DEFERRING;
 484   }
 485 }
 486
 487 void WebURLLoaderImpl::Context::DidChangePriority(
 488     WebURLRequest::Priority new_priority, int intra_priority_value) {
 489   if (request_id_ != -1) {
 490     resource_dispatcher_->DidChangePriority(
 491         request_id_,
 492         ConvertWebKitPriorityToNetPriority(new_priority),
 493         intra_priority_value);
 494   }
 495 }
 496
 497 bool WebURLLoaderImpl::Context::AttachThreadedDataReceiver(
 498     blink::WebThreadedDataReceiver* threaded_data_receiver) {
 499   if (request_id_ != -1) {
 500     return resource_dispatcher_->AttachThreadedDataReceiver(
 501         request_id_, threaded_data_receiver);
 502   }
 503
 504   return false;
 505 }
 506
 507 void WebURLLoaderImpl::Context::Start(const WebURLRequest& request,
 508                                       SyncLoadResponse* sync_load_response) {
 509   DCHECK(request_id_ == -1);
 510   request_ = request;  // Save the request.
 511   if (request.extraData()) {
 512     RequestExtraData* extra_data =
 513         static_cast<RequestExtraData*>(request.extraData());
 514     stream_override_ = extra_data->TakeStreamOverrideOwnership();
 515   }
 516
 517   GURL url = request.url();
 518
 519   // PlzNavigate: during navigation, the renderer should request a stream which
 520   // contains the body of the response. The request has already been made by the
 521   // browser.
 522   if (stream_override_.get()) {
 523     CHECK(base::CommandLine::ForCurrentProcess()->HasSwitch(
 524         switches::kEnableBrowserSideNavigation));
 525     DCHECK(!sync_load_response);
 526     DCHECK_NE(WebURLRequest::FrameTypeNone, request.frameType());
 527     DCHECK_EQ("GET", request.httpMethod().latin1());
 528     url = stream_override_->stream_url;
 529   }
 530
 531   if (CanHandleDataURLRequestLocally()) {
 532     if (sync_load_response) {
 533       // This is a sync load. Do the work now.
 534       sync_load_response->url = url;
 535       sync_load_response->error_code =
 536           GetInfoFromDataURL(sync_load_response->url, sync_load_response,
 537                              &sync_load_response->data);
 538     } else {
 539       task_runner_->PostTask(FROM_HERE,
 540                              base::Bind(&Context::HandleDataURL, this));
 541     }
 542     return;
 543   }
 544
 545   // PlzNavigate: outside of tests, the only navigation requests going through
 546   // the WebURLLoader are the ones created by CommitNavigation. Several browser
 547   // tests load HTML directly through a data url which will be handled by the
 548   // block above.
 549   DCHECK_IMPLIES(base::CommandLine::ForCurrentProcess()->HasSwitch(
 550                      switches::kEnableBrowserSideNavigation),
 551                  stream_override_.get() ||
 552                      request.frameType() == WebURLRequest::FrameTypeNone);
 553
 554   GURL referrer_url(
 555       request.httpHeaderField(WebString::fromUTF8("Referer")).latin1());
 556   const std::string& method = request.httpMethod().latin1();
 557
 558   // TODO(brettw) this should take parameter encoding into account when
 559   // creating the GURLs.
 560
 561   // TODO(horo): Check credentials flag is unset when credentials mode is omit.
 562   //             Check credentials flag is set when credentials mode is include.
 563
 564   RequestInfo request_info;
 565   request_info.method = method;
 566   request_info.url = url;
 567   request_info.first_party_for_cookies = request.firstPartyForCookies();
 568   referrer_policy_ = request.referrerPolicy();
 569   request_info.referrer = Referrer(referrer_url, referrer_policy_);
 570   request_info.headers = GetWebURLRequestHeaders(request);
 571   request_info.load_flags = GetLoadFlagsForWebURLRequest(request);
 572   request_info.enable_load_timing = true;
 573   request_info.enable_upload_progress = request.reportUploadProgress();
 574   if (request.requestContext() == WebURLRequest::RequestContextXMLHttpRequest &&
 575       (url.has_username() || url.has_password())) {
 576     request_info.do_not_prompt_for_login = true;
 577   }
 578   // requestor_pid only needs to be non-zero if the request originates outside
 579   // the render process, so we can use requestorProcessID even for requests
 580   // from in-process plugins.
 581   request_info.requestor_pid = request.requestorProcessID();
 582   request_info.request_type = WebURLRequestToResourceType(request);
 583   request_info.priority =
 584       ConvertWebKitPriorityToNetPriority(request.priority());
 585   request_info.appcache_host_id = request.appCacheHostID();
 586   request_info.routing_id = request.requestorID();
 587   request_info.download_to_file = request.downloadToFile();
 588   request_info.has_user_gesture = request.hasUserGesture();
 589   request_info.skip_service_worker = request.skipServiceWorker();
 590   request_info.should_reset_appcache = request.shouldResetAppCache();
 591   request_info.fetch_request_mode = GetFetchRequestMode(request);
 592   request_info.fetch_credentials_mode = GetFetchCredentialsMode(request);
 593   request_info.fetch_request_context_type = GetRequestContextType(request);
 594   request_info.fetch_frame_type = GetRequestContextFrameType(request);
 595   request_info.extra_data = request.extraData();
 596
 597   scoped_refptr<ResourceRequestBody> request_body =
 598       GetRequestBodyForWebURLRequest(request).get();
 599
 600   if (sync_load_response) {
 601     resource_dispatcher_->StartSync(
 602         request_info, request_body.get(), sync_load_response);
 603     return;
 604   }
 605
 606   request_id_ = resource_dispatcher_->StartAsync(
 607       request_info, request_body.get(), this);
 608 }
 609
 610 void WebURLLoaderImpl::Context::OnUploadProgress(uint64 position, uint64 size) {
 611   if (client_)
 612     client_->didSendData(loader_, position, size);
 613 }
 614
 615 bool WebURLLoaderImpl::Context::OnReceivedRedirect(
 616     const net::RedirectInfo& redirect_info,
 617     const ResourceResponseInfo& info) {
 618   if (!client_)
 619     return false;
 620
 621   WebURLResponse response;
 622   response.initialize();
 623   PopulateURLResponse(request_.url(), info, &response,
 624                       request_.reportRawHeaders());
 625
 626   // TODO(darin): We lack sufficient information to construct the actual
 627   // request that resulted from the redirect.
 628   WebURLRequest new_request(redirect_info.new_url);
 629   new_request.setFirstPartyForCookies(
 630       redirect_info.new_first_party_for_cookies);
 631   new_request.setDownloadToFile(request_.downloadToFile());
 632   new_request.setUseStreamOnResponse(request_.useStreamOnResponse());
 633   new_request.setRequestContext(request_.requestContext());
 634   new_request.setFrameType(request_.frameType());
 635   new_request.setSkipServiceWorker(!info.was_fetched_via_service_worker);
 636   new_request.setShouldResetAppCache(request_.shouldResetAppCache());
 637   new_request.setFetchRequestMode(request_.fetchRequestMode());
 638   new_request.setFetchCredentialsMode(request_.fetchCredentialsMode());
 639
 640   new_request.setHTTPReferrer(WebString::fromUTF8(redirect_info.new_referrer),
 641                               referrer_policy_);
 642
 643   std::string old_method = request_.httpMethod().utf8();
 644   new_request.setHTTPMethod(WebString::fromUTF8(redirect_info.new_method));
 645   if (redirect_info.new_method == old_method)
 646     new_request.setHTTPBody(request_.httpBody());
 647
 648   // Protect from deletion during call to willSendRequest.
 649   scoped_refptr<Context> protect(this);
 650
 651   client_->willSendRequest(loader_, new_request, response);
 652   request_ = new_request;
 653
 654   // Only follow the redirect if WebKit left the URL unmodified.
 655   if (redirect_info.new_url == GURL(new_request.url())) {
 656     // First-party cookie logic moved from DocumentLoader in Blink to
 657     // net::URLRequest in the browser. Assert that Blink didn't try to change it
 658     // to something else.
 659     DCHECK_EQ(redirect_info.new_first_party_for_cookies.spec(),
 660               request_.firstPartyForCookies().string().utf8());
 661     return true;
 662   }
 663
 664   // We assume that WebKit only changes the URL to suppress a redirect, and we
 665   // assume that it does so by setting it to be invalid.
 666   DCHECK(!new_request.url().isValid());
 667   return false;
 668 }
 669
 670 void WebURLLoaderImpl::Context::OnReceivedResponse(
 671     const ResourceResponseInfo& initial_info) {
 672   if (!client_)
 673     return;
 674
 675   ResourceResponseInfo info = initial_info;
 676
 677   // PlzNavigate: during navigations, the ResourceResponse has already been
 678   // received on the browser side, and has been passed down to the renderer.
 679   if (stream_override_.get()) {
 680     CHECK(base::CommandLine::ForCurrentProcess()->HasSwitch(
 681         switches::kEnableBrowserSideNavigation));
 682     info = stream_override_->response;
 683   }
 684
 685   WebURLResponse response;
 686   response.initialize();
 687   PopulateURLResponse(request_.url(), info, &response,
 688                       request_.reportRawHeaders());
 689
 690   bool show_raw_listing = (GURL(request_.url()).query() == "raw");
 691
 692   if (info.mime_type == "text/vnd.chromium.ftp-dir") {
 693     if (show_raw_listing) {
 694       // Set the MIME type to plain text to prevent any active content.
 695       response.setMIMEType("text/plain");
 696     } else {
 697       // We're going to produce a parsed listing in HTML.
 698       response.setMIMEType("text/html");
 699     }
 700   }
 701
 702   // Prevent |this| from being destroyed if the client destroys the loader,
 703   // ether in didReceiveResponse, or when the multipart/ftp delegate calls into
 704   // it.
 705   scoped_refptr<Context> protect(this);
 706
 707   if (request_.useStreamOnResponse()) {
 708     SharedMemoryDataConsumerHandle::BackpressureMode mode =
 709         SharedMemoryDataConsumerHandle::kDoNotApplyBackpressure;
 710     if (info.headers &&
 711         info.headers->HasHeaderValue("Cache-Control", "no-store")) {
 712       mode = SharedMemoryDataConsumerHandle::kApplyBackpressure;
 713     }
 714
 715     auto read_handle = make_scoped_ptr(new SharedMemoryDataConsumerHandle(
 716         mode, base::Bind(&Context::CancelBodyStreaming, this),
 717         &body_stream_writer_));
 718
 719     // Here |body_stream_writer_| has an indirect reference to |this| and that
 720     // creates a reference cycle, but it is not a problem because the cycle
 721     // will break if one of the following happens:
 722     //  1) The body data transfer is done (with or without an error).
 723     //  2) |read_handle| (and its reader) is detached.
 724
 725     // The client takes |read_handle|'s ownership.
 726     client_->didReceiveResponse(loader_, response, read_handle.release());
 727     // TODO(yhirano): Support ftp listening and multipart
 728     return;
 729   } else {
 730     client_->didReceiveResponse(loader_, response);
 731   }
 732
 733   // We may have been cancelled after didReceiveResponse, which would leave us
 734   // without a client and therefore without much need to do further handling.
 735   if (!client_)
 736     return;
 737
 738   DCHECK(!ftp_listing_delegate_.get());
 739   DCHECK(!multipart_delegate_.get());
 740   if (info.headers.get() && info.mime_type == "multipart/x-mixed-replace") {
 741     std::string content_type;
 742     info.headers->EnumerateHeader(NULL, "content-type", &content_type);
 743
 744     std::string mime_type;
 745     std::string charset;
 746     bool had_charset = false;
 747     std::string boundary;
 748     net::HttpUtil::ParseContentType(content_type, &mime_type, &charset,
 749                                     &had_charset, &boundary);
 750     base::TrimString(boundary, " \"", &boundary);
 751
 752     // If there's no boundary, just handle the request normally.  In the gecko
 753     // code, nsMultiMixedConv::OnStartRequest throws an exception.
 754     if (!boundary.empty()) {
 755       multipart_delegate_.reset(
 756           new MultipartResponseDelegate(client_, loader_, response, boundary));
 757     }
 758   } else if (info.mime_type == "text/vnd.chromium.ftp-dir" &&
 759              !show_raw_listing) {
 760     ftp_listing_delegate_.reset(
 761         new FtpDirectoryListingResponseDelegate(client_, loader_, response));
 762   }
 763 }
 764
 765 void WebURLLoaderImpl::Context::OnDownloadedData(int len,
 766                                                  int encoded_data_length) {
 767   if (client_)
 768     client_->didDownloadData(loader_, len, encoded_data_length);
 769 }
 770
 771 void WebURLLoaderImpl::Context::OnReceivedData(scoped_ptr<ReceivedData> data) {
 772   const char* payload = data->payload();
 773   int data_length = data->length();
 774   int encoded_data_length = data->encoded_length();
 775   if (!client_)
 776     return;
 777
 778   if (ftp_listing_delegate_) {
 779     // The FTP listing delegate will make the appropriate calls to
 780     // client_->didReceiveData and client_->didReceiveResponse.  Since the
 781     // delegate may want to do work after sending data to the delegate, keep
 782     // |this| and the delegate alive until it's finished handling the data.
 783     scoped_refptr<Context> protect(this);
 784     ftp_listing_delegate_->OnReceivedData(payload, data_length);
 785   } else if (multipart_delegate_) {
 786     // The multipart delegate will make the appropriate calls to
 787     // client_->didReceiveData and client_->didReceiveResponse.  Since the
 788     // delegate may want to do work after sending data to the delegate, keep
 789     // |this| and the delegate alive until it's finished handling the data.
 790     scoped_refptr<Context> protect(this);
 791     multipart_delegate_->OnReceivedData(payload, data_length,
 792                                         encoded_data_length);
 793   } else {
 794     scoped_refptr<Context> protect(this);
 795     // We dispatch the data even when |useStreamOnResponse()| is set, in order
 796     // to make Devtools work.
 797     client_->didReceiveData(loader_, payload, data_length, encoded_data_length);
 798
 799     if (request_.useStreamOnResponse()) {
 800       // We don't support ftp_listening_delegate_ and multipart_delegate_ for
 801       // now.
 802       // TODO(yhirano): Support ftp listening and multipart.
 803       body_stream_writer_->AddData(data.Pass());
 804     }
 805   }
 806 }
 807
 808 void WebURLLoaderImpl::Context::OnReceivedCachedMetadata(
 809     const char* data, int len) {
 810   if (client_)
 811     client_->didReceiveCachedMetadata(loader_, data, len);
 812 }
 813
 814 void WebURLLoaderImpl::Context::OnCompletedRequest(
 815     int error_code,
 816     bool was_ignored_by_handler,
 817     bool stale_copy_in_cache,
 818     const std::string& security_info,
 819     const base::TimeTicks& completion_time,
 820     int64 total_transfer_size) {
 821   // The WebURLLoaderImpl may be deleted in any of the calls to the client or
 822   // the delegates below (As they also may call in to the client).  Keep |this|
 823   // alive in that case, to avoid a crash.  If that happens, the request will be
 824   // cancelled and |client_| will be set to NULL.
 825   scoped_refptr<Context> protect(this);
 826
 827   if (ftp_listing_delegate_) {
 828     ftp_listing_delegate_->OnCompletedRequest();
 829     ftp_listing_delegate_.reset(NULL);
 830   } else if (multipart_delegate_) {
 831     multipart_delegate_->OnCompletedRequest();
 832     multipart_delegate_.reset(NULL);
 833   }
 834
 835   if (body_stream_writer_ && error_code != net::OK)
 836     body_stream_writer_->Fail();
 837   body_stream_writer_.reset();
 838
 839   if (client_) {
 840     if (error_code != net::OK) {
 841       client_->didFail(
 842           loader_,
 843           CreateWebURLError(request_.url(), stale_copy_in_cache, error_code,
 844               was_ignored_by_handler));
 845     } else {
 846       client_->didFinishLoading(loader_,
 847                                 (completion_time - TimeTicks()).InSecondsF(),
 848                                 total_transfer_size);
 849     }
 850   }
 851 }
 852
 853 void WebURLLoaderImpl::Context::OnReceivedCompletedResponse(
 854     const ResourceResponseInfo& info,
 855     scoped_ptr<ReceivedData> data,
 856     int error_code,
 857     bool was_ignored_by_handler,
 858     bool stale_copy_in_cache,
 859     const std::string& security_info,
 860     const base::TimeTicks& completion_time,
 861     int64 total_transfer_size) {
 862   scoped_refptr<Context> protect(this);
 863
 864   OnReceivedResponse(info);
 865   if (data)
 866     OnReceivedData(data.Pass());
 867   OnCompletedRequest(error_code, was_ignored_by_handler, stale_copy_in_cache,
 868                      security_info, completion_time, total_transfer_size);
 869 }
 870
 871 WebURLLoaderImpl::Context::~Context() {
 872   if (request_id_ >= 0) {
 873     resource_dispatcher_->RemovePendingRequest(request_id_);
 874   }
 875 }
 876
 877 void WebURLLoaderImpl::Context::CancelBodyStreaming() {
 878   scoped_refptr<Context> protect(this);
 879
 880   // Notify renderer clients that the request is canceled.
 881   if (ftp_listing_delegate_) {
 882     ftp_listing_delegate_->OnCompletedRequest();
 883     ftp_listing_delegate_.reset(NULL);
 884   } else if (multipart_delegate_) {
 885     multipart_delegate_->OnCompletedRequest();
 886     multipart_delegate_.reset(NULL);
 887   }
 888
 889   if (body_stream_writer_) {
 890     body_stream_writer_->Fail();
 891     body_stream_writer_.reset();
 892   }
 893   if (client_) {
 894     // TODO(yhirano): Set |stale_copy_in_cache| appropriately if possible.
 895     client_->didFail(
 896         loader_, CreateWebURLError(request_.url(), false, net::ERR_ABORTED));
 897   }
 898
 899   // Notify the browser process that the request is canceled.
 900   Cancel();
 901 }
 902
 903 bool WebURLLoaderImpl::Context::CanHandleDataURLRequestLocally() const {
 904   GURL url = request_.url();
 905   if (!url.SchemeIs(url::kDataScheme))
 906     return false;
 907
 908   // The fast paths for data URL, Start() and HandleDataURL(), don't support
 909   // the downloadToFile option.
 910   if (request_.downloadToFile())
 911     return false;
 912
 913   // Data url requests from object tags may need to be intercepted as streams
 914   // and so need to be sent to the browser.
 915   if (request_.requestContext() == WebURLRequest::RequestContextObject)
 916     return false;
 917
 918   // Optimize for the case where we can handle a data URL locally.  We must
 919   // skip this for data URLs targetted at frames since those could trigger a
 920   // download.
 921   //
 922   // NOTE: We special case MIME types we can render both for performance
 923   // reasons as well as to support unit tests.
 924
 925 #if defined(OS_ANDROID)
 926   // For compatibility reasons on Android we need to expose top-level data://
 927   // to the browser.
 928   if (request_.frameType() == WebURLRequest::FrameTypeTopLevel)
 929     return false;
 930 #endif
 931
 932   if (request_.frameType() != WebURLRequest::FrameTypeTopLevel &&
 933       request_.frameType() != WebURLRequest::FrameTypeNested)
 934     return true;
 935
 936   std::string mime_type, unused_charset;
 937   if (net::DataURL::Parse(request_.url(), &mime_type, &unused_charset, NULL) &&
 938       mime_util::IsSupportedMimeType(mime_type))
 939     return true;
 940
 941   return false;
 942 }
 943
 944 void WebURLLoaderImpl::Context::HandleDataURL() {
 945   DCHECK_NE(defers_loading_, DEFERRED_DATA);
 946   if (defers_loading_ == SHOULD_DEFER) {
 947       defers_loading_ = DEFERRED_DATA;
 948       return;
 949   }
 950
 951   ResourceResponseInfo info;
 952   std::string data;
 953
 954   int error_code = GetInfoFromDataURL(request_.url(), &info, &data);
 955
 956   if (error_code == net::OK) {
 957     OnReceivedResponse(info);
 958     if (!data.empty())
 959       OnReceivedData(
 960           make_scoped_ptr(new FixedReceivedData(data.data(), data.size(), 0)));
 961   }
 962
 963   OnCompletedRequest(error_code, false, false, info.security_info,
 964                      base::TimeTicks::Now(), 0);
 965 }
 966
 967 // WebURLLoaderImpl -----------------------------------------------------------
 968
 969 WebURLLoaderImpl::WebURLLoaderImpl(
 970     ResourceDispatcher* resource_dispatcher,
 971     scoped_refptr<base::SingleThreadTaskRunner> task_runner)
 972     : context_(new Context(this, resource_dispatcher, task_runner)) {
 973 }
 974
 975 WebURLLoaderImpl::~WebURLLoaderImpl() {
 976   cancel();
 977 }
 978
 979 void WebURLLoaderImpl::PopulateURLResponse(const GURL& url,
 980                                            const ResourceResponseInfo& info,
 981                                            WebURLResponse* response,
 982                                            bool report_security_info) {
 983   response->setURL(url);
 984   response->setResponseTime(info.response_time.ToInternalValue());
 985   response->setMIMEType(WebString::fromUTF8(info.mime_type));
 986   response->setTextEncodingName(WebString::fromUTF8(info.charset));
 987   response->setExpectedContentLength(info.content_length);
 988   response->setSecurityInfo(info.security_info);
 989   response->setAppCacheID(info.appcache_id);
 990   response->setAppCacheManifestURL(info.appcache_manifest_url);
 991   response->setWasCached(!info.load_timing.request_start_time.is_null() &&
 992       info.response_time < info.load_timing.request_start_time);
 993   response->setRemoteIPAddress(
 994       WebString::fromUTF8(info.socket_address.host()));
 995   response->setRemotePort(info.socket_address.port());
 996   response->setConnectionID(info.load_timing.socket_log_id);
 997   response->setConnectionReused(info.load_timing.socket_reused);
 998   response->setDownloadFilePath(info.download_file_path.AsUTF16Unsafe());
 999   response->setWasFetchedViaSPDY(info.was_fetched_via_spdy);
1000   response->setWasFetchedViaServiceWorker(info.was_fetched_via_service_worker);
1001   response->setWasFallbackRequiredByServiceWorker(
1002       info.was_fallback_required_by_service_worker);
1003   response->setServiceWorkerResponseType(info.response_type_via_service_worker);
1004   response->setOriginalURLViaServiceWorker(
1005       info.original_url_via_service_worker);
1006
1007   SetSecurityStyleAndDetails(url, info.security_info, response,
1008                              report_security_info);
1009
1010   WebURLResponseExtraDataImpl* extra_data =
1011       new WebURLResponseExtraDataImpl(info.npn_negotiated_protocol);
1012   response->setExtraData(extra_data);
1013   extra_data->set_was_fetched_via_spdy(info.was_fetched_via_spdy);
1014   extra_data->set_was_npn_negotiated(info.was_npn_negotiated);
1015   extra_data->set_was_alternate_protocol_available(
1016       info.was_alternate_protocol_available);
1017   extra_data->set_connection_info(info.connection_info);
1018   extra_data->set_was_fetched_via_proxy(info.was_fetched_via_proxy);
1019   extra_data->set_proxy_server(info.proxy_server);
1020
1021   // If there's no received headers end time, don't set load timing.  This is
1022   // the case for non-HTTP requests, requests that don't go over the wire, and
1023   // certain error cases.
1024   if (!info.load_timing.receive_headers_end.is_null()) {
1025     WebURLLoadTiming timing;
1026     PopulateURLLoadTiming(info.load_timing, &timing);
1027     const TimeTicks kNullTicks;
1028     timing.setWorkerStart(
1029         (info.service_worker_start_time - kNullTicks).InSecondsF());
1030     timing.setWorkerReady(
1031         (info.service_worker_ready_time - kNullTicks).InSecondsF());
1032     response->setLoadTiming(timing);
1033   }
1034
1035   if (info.devtools_info.get()) {
1036     WebHTTPLoadInfo load_info;
1037
1038     load_info.setHTTPStatusCode(info.devtools_info->http_status_code);
1039     load_info.setHTTPStatusText(WebString::fromLatin1(
1040         info.devtools_info->http_status_text));
1041     load_info.setEncodedDataLength(info.encoded_data_length);
1042
1043     load_info.setRequestHeadersText(WebString::fromLatin1(
1044         info.devtools_info->request_headers_text));
1045     load_info.setResponseHeadersText(WebString::fromLatin1(
1046         info.devtools_info->response_headers_text));
1047     const HeadersVector& request_headers = info.devtools_info->request_headers;
1048     for (HeadersVector::const_iterator it = request_headers.begin();
1049          it != request_headers.end(); ++it) {
1050       load_info.addRequestHeader(WebString::fromLatin1(it->first),
1051           WebString::fromLatin1(it->second));
1052     }
1053     const HeadersVector& response_headers =
1054         info.devtools_info->response_headers;
1055     for (HeadersVector::const_iterator it = response_headers.begin();
1056          it != response_headers.end(); ++it) {
1057       load_info.addResponseHeader(WebString::fromLatin1(it->first),
1058           WebString::fromLatin1(it->second));
1059     }
1060     load_info.setNPNNegotiatedProtocol(WebString::fromLatin1(
1061         info.npn_negotiated_protocol));
1062     response->setHTTPLoadInfo(load_info);
1063   }
1064
1065   const net::HttpResponseHeaders* headers = info.headers.get();
1066   if (!headers)
1067     return;
1068
1069   WebURLResponse::HTTPVersion version = WebURLResponse::Unknown;
1070   if (headers->GetHttpVersion() == net::HttpVersion(0, 9))
1071     version = WebURLResponse::HTTP_0_9;
1072   else if (headers->GetHttpVersion() == net::HttpVersion(1, 0))
1073     version = WebURLResponse::HTTP_1_0;
1074   else if (headers->GetHttpVersion() == net::HttpVersion(1, 1))
1075     version = WebURLResponse::HTTP_1_1;
1076   response->setHTTPVersion(version);
1077   response->setHTTPStatusCode(headers->response_code());
1078   response->setHTTPStatusText(WebString::fromLatin1(headers->GetStatusText()));
1079
1080   // TODO(darin): We should leverage HttpResponseHeaders for this, and this
1081   // should be using the same code as ResourceDispatcherHost.
1082   // TODO(jungshik): Figure out the actual value of the referrer charset and
1083   // pass it to GetSuggestedFilename.
1084   std::string value;
1085   headers->EnumerateHeader(NULL, "content-disposition", &value);
1086   response->setSuggestedFileName(
1087       net::GetSuggestedFilename(url,
1088                                 value,
1089                                 std::string(),  // referrer_charset
1090                                 std::string(),  // suggested_name
1091                                 std::string(),  // mime_type
1092                                 std::string()));  // default_name
1093
1094   Time time_val;
1095   if (headers->GetLastModifiedValue(&time_val))
1096     response->setLastModifiedDate(time_val.ToDoubleT());
1097
1098   // Build up the header map.
1099   void* iter = NULL;
1100   std::string name;
1101   while (headers->EnumerateHeaderLines(&iter, &name, &value)) {
1102     response->addHTTPHeaderField(WebString::fromLatin1(name),
1103                                  WebString::fromLatin1(value));
1104   }
1105 }
1106
1107 void WebURLLoaderImpl::loadSynchronously(const WebURLRequest& request,
1108                                          WebURLResponse& response,
1109                                          WebURLError& error,
1110                                          WebData& data) {
1111   SyncLoadResponse sync_load_response;
1112   context_->Start(request, &sync_load_response);
1113
1114   const GURL& final_url = sync_load_response.url;
1115
1116   // TODO(tc): For file loads, we may want to include a more descriptive
1117   // status code or status text.
1118   int error_code = sync_load_response.error_code;
1119   if (error_code != net::OK) {
1120     response.setURL(final_url);
1121     error.domain = WebString::fromUTF8(net::kErrorDomain);
1122     error.reason = error_code;
1123     error.unreachableURL = final_url;
1124     return;
1125   }
1126
1127   PopulateURLResponse(final_url, sync_load_response, &response,
1128                       request.reportRawHeaders());
1129
1130   data.assign(sync_load_response.data.data(),
1131               sync_load_response.data.size());
1132 }
1133
1134 void WebURLLoaderImpl::loadAsynchronously(const WebURLRequest& request,
1135                                           WebURLLoaderClient* client) {
1136   DCHECK(!context_->client());
1137
1138   context_->set_client(client);
1139   context_->Start(request, NULL);
1140 }
1141
1142 void WebURLLoaderImpl::cancel() {
1143   context_->Cancel();
1144 }
1145
1146 void WebURLLoaderImpl::setDefersLoading(bool value) {
1147   context_->SetDefersLoading(value);
1148 }
1149
1150 void WebURLLoaderImpl::didChangePriority(WebURLRequest::Priority new_priority,
1151                                          int intra_priority_value) {
1152   context_->DidChangePriority(new_priority, intra_priority_value);
1153 }
1154
1155 bool WebURLLoaderImpl::attachThreadedDataReceiver(
1156     blink::WebThreadedDataReceiver* threaded_data_receiver) {
1157   return context_->AttachThreadedDataReceiver(threaded_data_receiver);
1158 }
1159
1160 }  // namespace content