content/browser/frame_host/render_frame_host_impl.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/frame_host/render_frame_host_impl.h"
   6
   7 #include "base/bind.h"
   8 #include "base/command_line.h"
   9 #include "base/containers/hash_tables.h"
  10 #include "base/lazy_instance.h"
  11 #include "base/metrics/histogram.h"
  12 #include "base/metrics/user_metrics_action.h"
  13 #include "base/time/time.h"
  14 #include "content/browser/accessibility/accessibility_mode_helper.h"
  15 #include "content/browser/accessibility/browser_accessibility_manager.h"
  16 #include "content/browser/accessibility/browser_accessibility_state_impl.h"
  17 #include "content/browser/child_process_security_policy_impl.h"
  18 #include "content/browser/frame_host/cross_process_frame_connector.h"
  19 #include "content/browser/frame_host/cross_site_transferring_request.h"
  20 #include "content/browser/frame_host/frame_accessibility.h"
  21 #include "content/browser/frame_host/frame_tree.h"
  22 #include "content/browser/frame_host/frame_tree_node.h"
  23 #include "content/browser/frame_host/navigator.h"
  24 #include "content/browser/frame_host/render_frame_host_delegate.h"
  25 #include "content/browser/frame_host/render_frame_proxy_host.h"
  26 #include "content/browser/frame_host/render_widget_host_view_child_frame.h"
  27 #include "content/browser/renderer_host/input/input_router.h"
  28 #include "content/browser/renderer_host/input/timeout_monitor.h"
  29 #include "content/browser/renderer_host/render_process_host_impl.h"
  30 #include "content/browser/renderer_host/render_view_host_delegate.h"
  31 #include "content/browser/renderer_host/render_view_host_delegate_view.h"
  32 #include "content/browser/renderer_host/render_view_host_impl.h"
  33 #include "content/browser/renderer_host/render_widget_host_impl.h"
  34 #include "content/browser/renderer_host/render_widget_host_view_base.h"
  35 #include "content/browser/transition_request_manager.h"
  36 #include "content/common/accessibility_messages.h"
  37 #include "content/common/desktop_notification_messages.h"
  38 #include "content/common/frame_messages.h"
  39 #include "content/common/input_messages.h"
  40 #include "content/common/inter_process_time_ticks_converter.h"
  41 #include "content/common/navigation_params.h"
  42 #include "content/common/platform_notification_messages.h"
  43 #include "content/common/render_frame_setup.mojom.h"
  44 #include "content/common/swapped_out_messages.h"
  45 #include "content/public/browser/ax_event_notification_details.h"
  46 #include "content/public/browser/browser_accessibility_state.h"
  47 #include "content/public/browser/browser_context.h"
  48 #include "content/public/browser/browser_plugin_guest_manager.h"
  49 #include "content/public/browser/browser_thread.h"
  50 #include "content/public/browser/content_browser_client.h"
  51 #include "content/public/browser/desktop_notification_delegate.h"
  52 #include "content/public/browser/render_process_host.h"
  53 #include "content/public/browser/render_widget_host_view.h"
  54 #include "content/public/browser/stream_handle.h"
  55 #include "content/public/browser/user_metrics.h"
  56 #include "content/public/common/content_constants.h"
  57 #include "content/public/common/content_switches.h"
  58 #include "content/public/common/url_constants.h"
  59 #include "content/public/common/url_utils.h"
  60 #include "ui/accessibility/ax_tree.h"
  61 #include "url/gurl.h"
  62
  63 #if defined(OS_MACOSX)
  64 #include "content/browser/frame_host/popup_menu_helper_mac.h"
  65 #endif
  66
  67 using base::TimeDelta;
  68
  69 namespace content {
  70
  71 namespace {
  72
  73 // The next value to use for the accessibility reset token.
  74 int g_next_accessibility_reset_token = 1;
  75
  76 // The (process id, routing id) pair that identifies one RenderFrame.
  77 typedef std::pair<int32, int32> RenderFrameHostID;
  78 typedef base::hash_map<RenderFrameHostID, RenderFrameHostImpl*>
  79     RoutingIDFrameMap;
  80 base::LazyInstance<RoutingIDFrameMap> g_routing_id_frame_map =
  81     LAZY_INSTANCE_INITIALIZER;
  82
  83 class DesktopNotificationDelegateImpl : public DesktopNotificationDelegate {
  84  public:
  85   DesktopNotificationDelegateImpl(RenderFrameHost* render_frame_host,
  86                                   int notification_id)
  87       : render_process_id_(render_frame_host->GetProcess()->GetID()),
  88         render_frame_id_(render_frame_host->GetRoutingID()),
  89         notification_id_(notification_id) {}
  90
  91   ~DesktopNotificationDelegateImpl() override {}
  92
  93   void NotificationDisplayed() override {
  94     RenderFrameHost* rfh =
  95         RenderFrameHost::FromID(render_process_id_, render_frame_id_);
  96     if (!rfh)
  97       return;
  98
  99     rfh->Send(new DesktopNotificationMsg_PostDisplay(
 100         rfh->GetRoutingID(), notification_id_));
 101   }
 102
 103   void NotificationError() override {
 104     RenderFrameHost* rfh =
 105         RenderFrameHost::FromID(render_process_id_, render_frame_id_);
 106     if (!rfh)
 107       return;
 108
 109     rfh->Send(new DesktopNotificationMsg_PostError(
 110         rfh->GetRoutingID(), notification_id_));
 111   }
 112
 113   void NotificationClosed(bool by_user) override {
 114     RenderFrameHost* rfh =
 115         RenderFrameHost::FromID(render_process_id_, render_frame_id_);
 116     if (!rfh)
 117       return;
 118
 119     rfh->Send(new DesktopNotificationMsg_PostClose(
 120         rfh->GetRoutingID(), notification_id_, by_user));
 121     static_cast<RenderFrameHostImpl*>(rfh)->NotificationClosed(
 122         notification_id_);
 123   }
 124
 125   void NotificationClick() override {
 126     RenderFrameHost* rfh =
 127         RenderFrameHost::FromID(render_process_id_, render_frame_id_);
 128     if (!rfh)
 129       return;
 130
 131     rfh->Send(new DesktopNotificationMsg_PostClick(
 132         rfh->GetRoutingID(), notification_id_));
 133   }
 134
 135  private:
 136   int render_process_id_;
 137   int render_frame_id_;
 138   int notification_id_;
 139 };
 140
 141 // Translate a WebKit text direction into a base::i18n one.
 142 base::i18n::TextDirection WebTextDirectionToChromeTextDirection(
 143     blink::WebTextDirection dir) {
 144   switch (dir) {
 145     case blink::WebTextDirectionLeftToRight:
 146       return base::i18n::LEFT_TO_RIGHT;
 147     case blink::WebTextDirectionRightToLeft:
 148       return base::i18n::RIGHT_TO_LEFT;
 149     default:
 150       NOTREACHED();
 151       return base::i18n::UNKNOWN_DIRECTION;
 152   }
 153 }
 154
 155 }  // namespace
 156
 157 // static
 158 bool RenderFrameHostImpl::IsRFHStateActive(RenderFrameHostImplState rfh_state) {
 159   return rfh_state == STATE_DEFAULT;
 160 }
 161
 162 // static
 163 RenderFrameHost* RenderFrameHost::FromID(int render_process_id,
 164                                          int render_frame_id) {
 165   return RenderFrameHostImpl::FromID(render_process_id, render_frame_id);
 166 }
 167
 168 // static
 169 RenderFrameHostImpl* RenderFrameHostImpl::FromID(int process_id,
 170                                                  int routing_id) {
 171   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 172   RoutingIDFrameMap* frames = g_routing_id_frame_map.Pointer();
 173   RoutingIDFrameMap::iterator it = frames->find(
 174       RenderFrameHostID(process_id, routing_id));
 175   return it == frames->end() ? NULL : it->second;
 176 }
 177
 178 RenderFrameHostImpl::RenderFrameHostImpl(RenderViewHostImpl* render_view_host,
 179                                          RenderFrameHostDelegate* delegate,
 180                                          FrameTree* frame_tree,
 181                                          FrameTreeNode* frame_tree_node,
 182                                          int routing_id,
 183                                          bool is_swapped_out)
 184     : render_view_host_(render_view_host),
 185       delegate_(delegate),
 186       cross_process_frame_connector_(NULL),
 187       render_frame_proxy_host_(NULL),
 188       frame_tree_(frame_tree),
 189       frame_tree_node_(frame_tree_node),
 190       routing_id_(routing_id),
 191       render_frame_created_(false),
 192       navigations_suspended_(false),
 193       is_waiting_for_beforeunload_ack_(false),
 194       unload_ack_is_for_cross_site_transition_(false),
 195       accessibility_reset_token_(0),
 196       accessibility_reset_count_(0),
 197       no_create_browser_accessibility_manager_for_testing_(false),
 198       weak_ptr_factory_(this) {
 199   frame_tree_->RegisterRenderFrameHost(this);
 200   GetProcess()->AddRoute(routing_id_, this);
 201   g_routing_id_frame_map.Get().insert(std::make_pair(
 202       RenderFrameHostID(GetProcess()->GetID(), routing_id_),
 203       this));
 204
 205   if (is_swapped_out) {
 206     rfh_state_ = STATE_SWAPPED_OUT;
 207   } else {
 208     rfh_state_ = STATE_DEFAULT;
 209     GetSiteInstance()->increment_active_frame_count();
 210   }
 211
 212   SetUpMojoIfNeeded();
 213
 214   swapout_event_monitor_timeout_.reset(new TimeoutMonitor(base::Bind(
 215       &RenderFrameHostImpl::OnSwappedOut, weak_ptr_factory_.GetWeakPtr())));
 216 }
 217
 218 RenderFrameHostImpl::~RenderFrameHostImpl() {
 219   GetProcess()->RemoveRoute(routing_id_);
 220   g_routing_id_frame_map.Get().erase(
 221       RenderFrameHostID(GetProcess()->GetID(), routing_id_));
 222
 223   if (delegate_)
 224     delegate_->RenderFrameDeleted(this);
 225
 226   FrameAccessibility::GetInstance()->OnRenderFrameHostDestroyed(this);
 227
 228   // If this was swapped out, it already decremented the active frame count of
 229   // the SiteInstance it belongs to.
 230   if (IsRFHStateActive(rfh_state_))
 231     GetSiteInstance()->decrement_active_frame_count();
 232
 233   // Notify the FrameTree that this RFH is going away, allowing it to shut down
 234   // the corresponding RenderViewHost if it is no longer needed.
 235   frame_tree_->UnregisterRenderFrameHost(this);
 236 }
 237
 238 int RenderFrameHostImpl::GetRoutingID() {
 239   return routing_id_;
 240 }
 241
 242 SiteInstanceImpl* RenderFrameHostImpl::GetSiteInstance() {
 243   return render_view_host_->GetSiteInstance();
 244 }
 245
 246 RenderProcessHost* RenderFrameHostImpl::GetProcess() {
 247   // TODO(nasko): This should return its own process, once we have working
 248   // cross-process navigation for subframes.
 249   return render_view_host_->GetProcess();
 250 }
 251
 252 RenderFrameHost* RenderFrameHostImpl::GetParent() {
 253   FrameTreeNode* parent_node = frame_tree_node_->parent();
 254   if (!parent_node)
 255     return NULL;
 256   return parent_node->current_frame_host();
 257 }
 258
 259 const std::string& RenderFrameHostImpl::GetFrameName() {
 260   return frame_tree_node_->frame_name();
 261 }
 262
 263 bool RenderFrameHostImpl::IsCrossProcessSubframe() {
 264   FrameTreeNode* parent_node = frame_tree_node_->parent();
 265   if (!parent_node)
 266     return false;
 267   return GetSiteInstance() !=
 268       parent_node->current_frame_host()->GetSiteInstance();
 269 }
 270
 271 GURL RenderFrameHostImpl::GetLastCommittedURL() {
 272   return frame_tree_node_->current_url();
 273 }
 274
 275 gfx::NativeView RenderFrameHostImpl::GetNativeView() {
 276   RenderWidgetHostView* view = render_view_host_->GetView();
 277   if (!view)
 278     return NULL;
 279   return view->GetNativeView();
 280 }
 281
 282 void RenderFrameHostImpl::ExecuteJavaScript(
 283     const base::string16& javascript) {
 284   Send(new FrameMsg_JavaScriptExecuteRequest(routing_id_,
 285                                              javascript,
 286                                              0, false));
 287 }
 288
 289 void RenderFrameHostImpl::ExecuteJavaScript(
 290      const base::string16& javascript,
 291      const JavaScriptResultCallback& callback) {
 292   static int next_id = 1;
 293   int key = next_id++;
 294   Send(new FrameMsg_JavaScriptExecuteRequest(routing_id_,
 295                                              javascript,
 296                                              key, true));
 297   javascript_callbacks_.insert(std::make_pair(key, callback));
 298 }
 299
 300 void RenderFrameHostImpl::ExecuteJavaScriptForTests(
 301     const base::string16& javascript) {
 302   Send(new FrameMsg_JavaScriptExecuteRequestForTests(routing_id_,
 303                                                      javascript,
 304                                                      0, false));
 305 }
 306
 307 RenderViewHost* RenderFrameHostImpl::GetRenderViewHost() {
 308   return render_view_host_;
 309 }
 310
 311 ServiceRegistry* RenderFrameHostImpl::GetServiceRegistry() {
 312   return service_registry_.get();
 313 }
 314
 315 bool RenderFrameHostImpl::Send(IPC::Message* message) {
 316   if (IPC_MESSAGE_ID_CLASS(message->type()) == InputMsgStart) {
 317     return render_view_host_->input_router()->SendInput(
 318         make_scoped_ptr(message));
 319   }
 320
 321   // Route IPCs through the RenderFrameProxyHost when in swapped out state.
 322   // Note: For subframes in --site-per-process mode, we don't use swapped out
 323   // RenderFrameHosts.
 324   if (frame_tree_node_->IsMainFrame() && is_swapped_out()) {
 325     DCHECK(render_frame_proxy_host_);
 326     return render_frame_proxy_host_->Send(message);
 327   }
 328
 329   return GetProcess()->Send(message);
 330 }
 331
 332 bool RenderFrameHostImpl::OnMessageReceived(const IPC::Message &msg) {
 333   // Filter out most IPC messages if this frame is swapped out.
 334   // We still want to handle certain ACKs to keep our state consistent.
 335   if (is_swapped_out()) {
 336     if (!SwappedOutMessages::CanHandleWhileSwappedOut(msg)) {
 337       // If this is a synchronous message and we decided not to handle it,
 338       // we must send an error reply, or else the renderer will be stuck
 339       // and won't respond to future requests.
 340       if (msg.is_sync()) {
 341         IPC::Message* reply = IPC::SyncMessage::GenerateReply(&msg);
 342         reply->set_reply_error();
 343         Send(reply);
 344       }
 345       // Don't continue looking for someone to handle it.
 346       return true;
 347     }
 348   }
 349
 350   if (delegate_->OnMessageReceived(this, msg))
 351     return true;
 352
 353   RenderFrameProxyHost* proxy =
 354       frame_tree_node_->render_manager()->GetProxyToParent();
 355   if (proxy && proxy->cross_process_frame_connector() &&
 356       proxy->cross_process_frame_connector()->OnMessageReceived(msg))
 357     return true;
 358
 359   bool handled = true;
 360   IPC_BEGIN_MESSAGE_MAP(RenderFrameHostImpl, msg)
 361     IPC_MESSAGE_HANDLER(FrameHostMsg_AddMessageToConsole, OnAddMessageToConsole)
 362     IPC_MESSAGE_HANDLER(FrameHostMsg_Detach, OnDetach)
 363     IPC_MESSAGE_HANDLER(FrameHostMsg_FrameFocused, OnFrameFocused)
 364     IPC_MESSAGE_HANDLER(FrameHostMsg_DidStartProvisionalLoadForFrame,
 365                         OnDidStartProvisionalLoadForFrame)
 366     IPC_MESSAGE_HANDLER(FrameHostMsg_DidFailProvisionalLoadWithError,
 367                         OnDidFailProvisionalLoadWithError)
 368     IPC_MESSAGE_HANDLER(FrameHostMsg_DidFailLoadWithError,
 369                         OnDidFailLoadWithError)
 370     IPC_MESSAGE_HANDLER_GENERIC(FrameHostMsg_DidCommitProvisionalLoad,
 371                                 OnDidCommitProvisionalLoad(msg))
 372     IPC_MESSAGE_HANDLER(FrameHostMsg_OpenURL, OnOpenURL)
 373     IPC_MESSAGE_HANDLER(FrameHostMsg_DocumentOnLoadCompleted,
 374                         OnDocumentOnLoadCompleted)
 375     IPC_MESSAGE_HANDLER(FrameHostMsg_BeforeUnload_ACK, OnBeforeUnloadACK)
 376     IPC_MESSAGE_HANDLER(FrameHostMsg_SwapOut_ACK, OnSwapOutACK)
 377     IPC_MESSAGE_HANDLER(FrameHostMsg_ContextMenu, OnContextMenu)
 378     IPC_MESSAGE_HANDLER(FrameHostMsg_JavaScriptExecuteResponse,
 379                         OnJavaScriptExecuteResponse)
 380     IPC_MESSAGE_HANDLER_DELAY_REPLY(FrameHostMsg_RunJavaScriptMessage,
 381                                     OnRunJavaScriptMessage)
 382     IPC_MESSAGE_HANDLER_DELAY_REPLY(FrameHostMsg_RunBeforeUnloadConfirm,
 383                                     OnRunBeforeUnloadConfirm)
 384     IPC_MESSAGE_HANDLER(FrameHostMsg_DidAccessInitialDocument,
 385                         OnDidAccessInitialDocument)
 386     IPC_MESSAGE_HANDLER(FrameHostMsg_DidDisownOpener, OnDidDisownOpener)
 387     IPC_MESSAGE_HANDLER(FrameHostMsg_DidAssignPageId, OnDidAssignPageId)
 388     IPC_MESSAGE_HANDLER(FrameHostMsg_UpdateTitle, OnUpdateTitle)
 389     IPC_MESSAGE_HANDLER(FrameHostMsg_UpdateEncoding, OnUpdateEncoding)
 390     IPC_MESSAGE_HANDLER(FrameHostMsg_BeginNavigation,
 391                         OnBeginNavigation)
 392     IPC_MESSAGE_HANDLER(PlatformNotificationHostMsg_RequestPermission,
 393                         OnRequestPlatformNotificationPermission)
 394     IPC_MESSAGE_HANDLER(DesktopNotificationHostMsg_Show,
 395                         OnShowDesktopNotification)
 396     IPC_MESSAGE_HANDLER(DesktopNotificationHostMsg_Cancel,
 397                         OnCancelDesktopNotification)
 398     IPC_MESSAGE_HANDLER(FrameHostMsg_TextSurroundingSelectionResponse,
 399                         OnTextSurroundingSelectionResponse)
 400     IPC_MESSAGE_HANDLER(AccessibilityHostMsg_Events, OnAccessibilityEvents)
 401     IPC_MESSAGE_HANDLER(AccessibilityHostMsg_LocationChanges,
 402                         OnAccessibilityLocationChanges)
 403 #if defined(OS_MACOSX) || defined(OS_ANDROID)
 404     IPC_MESSAGE_HANDLER(FrameHostMsg_ShowPopup, OnShowPopup)
 405     IPC_MESSAGE_HANDLER(FrameHostMsg_HidePopup, OnHidePopup)
 406 #endif
 407   IPC_END_MESSAGE_MAP()
 408
 409   // No further actions here, since we may have been deleted.
 410   return handled;
 411 }
 412
 413 void RenderFrameHostImpl::AccessibilitySetFocus(int object_id) {
 414   Send(new AccessibilityMsg_SetFocus(routing_id_, object_id));
 415 }
 416
 417 void RenderFrameHostImpl::AccessibilityDoDefaultAction(int object_id) {
 418   Send(new AccessibilityMsg_DoDefaultAction(routing_id_, object_id));
 419 }
 420
 421 void RenderFrameHostImpl::AccessibilityShowMenu(
 422     const gfx::Point& global_point) {
 423   RenderWidgetHostViewBase* view = static_cast<RenderWidgetHostViewBase*>(
 424       render_view_host_->GetView());
 425   if (view)
 426     view->AccessibilityShowMenu(global_point);
 427 }
 428
 429 void RenderFrameHostImpl::AccessibilityScrollToMakeVisible(
 430     int acc_obj_id, const gfx::Rect& subfocus) {
 431   Send(new AccessibilityMsg_ScrollToMakeVisible(
 432       routing_id_, acc_obj_id, subfocus));
 433 }
 434
 435 void RenderFrameHostImpl::AccessibilityScrollToPoint(
 436     int acc_obj_id, const gfx::Point& point) {
 437   Send(new AccessibilityMsg_ScrollToPoint(
 438       routing_id_, acc_obj_id, point));
 439 }
 440
 441 void RenderFrameHostImpl::AccessibilitySetTextSelection(
 442     int object_id, int start_offset, int end_offset) {
 443   Send(new AccessibilityMsg_SetTextSelection(
 444       routing_id_, object_id, start_offset, end_offset));
 445 }
 446
 447 bool RenderFrameHostImpl::AccessibilityViewHasFocus() const {
 448   RenderWidgetHostView* view = render_view_host_->GetView();
 449   if (view)
 450     return view->HasFocus();
 451   return false;
 452 }
 453
 454 gfx::Rect RenderFrameHostImpl::AccessibilityGetViewBounds() const {
 455   RenderWidgetHostView* view = render_view_host_->GetView();
 456   if (view)
 457     return view->GetViewBounds();
 458   return gfx::Rect();
 459 }
 460
 461 gfx::Point RenderFrameHostImpl::AccessibilityOriginInScreen(
 462     const gfx::Rect& bounds) const {
 463   RenderWidgetHostViewBase* view = static_cast<RenderWidgetHostViewBase*>(
 464       render_view_host_->GetView());
 465   if (view)
 466     return view->AccessibilityOriginInScreen(bounds);
 467   return gfx::Point();
 468 }
 469
 470 void RenderFrameHostImpl::AccessibilityHitTest(const gfx::Point& point) {
 471   Send(new AccessibilityMsg_HitTest(routing_id_, point));
 472 }
 473
 474 void RenderFrameHostImpl::AccessibilityFatalError() {
 475   browser_accessibility_manager_.reset(NULL);
 476   if (accessibility_reset_token_)
 477     return;
 478
 479   accessibility_reset_count_++;
 480   if (accessibility_reset_count_ >= kMaxAccessibilityResets) {
 481     Send(new AccessibilityMsg_FatalError(routing_id_));
 482   } else {
 483     accessibility_reset_token_ = g_next_accessibility_reset_token++;
 484     UMA_HISTOGRAM_COUNTS("Accessibility.FrameResetCount", 1);
 485     Send(new AccessibilityMsg_Reset(routing_id_, accessibility_reset_token_));
 486   }
 487 }
 488
 489 gfx::AcceleratedWidget
 490     RenderFrameHostImpl::AccessibilityGetAcceleratedWidget() {
 491   RenderWidgetHostViewBase* view = static_cast<RenderWidgetHostViewBase*>(
 492       render_view_host_->GetView());
 493   if (view)
 494     return view->AccessibilityGetAcceleratedWidget();
 495   return gfx::kNullAcceleratedWidget;
 496 }
 497
 498 gfx::NativeViewAccessible
 499     RenderFrameHostImpl::AccessibilityGetNativeViewAccessible() {
 500   RenderWidgetHostViewBase* view = static_cast<RenderWidgetHostViewBase*>(
 501       render_view_host_->GetView());
 502   if (view)
 503     return view->AccessibilityGetNativeViewAccessible();
 504   return NULL;
 505 }
 506
 507 BrowserAccessibilityManager* RenderFrameHostImpl::AccessibilityGetChildFrame(
 508     int accessibility_node_id) {
 509   RenderFrameHostImpl* child_frame =
 510       FrameAccessibility::GetInstance()->GetChild(this, accessibility_node_id);
 511   if (!child_frame)
 512     return NULL;
 513
 514   // Return NULL if this isn't an out-of-process iframe. Same-process iframes
 515   // are already part of the accessibility tree.
 516   if (child_frame->GetProcess()->GetID() == GetProcess()->GetID())
 517     return NULL;
 518
 519   // As a sanity check, make sure the frame we're going to return belongs
 520   // to the same BrowserContext.
 521   if (GetSiteInstance()->GetBrowserContext() !=
 522       child_frame->GetSiteInstance()->GetBrowserContext()) {
 523     NOTREACHED();
 524     return NULL;
 525   }
 526
 527   return child_frame->GetOrCreateBrowserAccessibilityManager();
 528 }
 529
 530 BrowserAccessibility* RenderFrameHostImpl::AccessibilityGetParentFrame() {
 531   RenderFrameHostImpl* parent_frame = NULL;
 532   int parent_node_id = 0;
 533   if (!FrameAccessibility::GetInstance()->GetParent(
 534       this, &parent_frame, &parent_node_id)) {
 535     return NULL;
 536   }
 537
 538   // As a sanity check, make sure the frame we're going to return belongs
 539   // to the same BrowserContext.
 540   if (GetSiteInstance()->GetBrowserContext() !=
 541       parent_frame->GetSiteInstance()->GetBrowserContext()) {
 542     NOTREACHED();
 543     return NULL;
 544   }
 545
 546   BrowserAccessibilityManager* manager =
 547       parent_frame->browser_accessibility_manager();
 548   if (!manager)
 549     return NULL;
 550
 551   return manager->GetFromID(parent_node_id);
 552 }
 553
 554 bool RenderFrameHostImpl::CreateRenderFrame(int parent_routing_id) {
 555   TRACE_EVENT0("navigation", "RenderFrameHostImpl::CreateRenderFrame");
 556   DCHECK(!IsRenderFrameLive()) << "Creating frame twice";
 557
 558   // The process may (if we're sharing a process with another host that already
 559   // initialized it) or may not (we have our own process or the old process
 560   // crashed) have been initialized. Calling Init multiple times will be
 561   // ignored, so this is safe.
 562   if (!GetProcess()->Init())
 563     return false;
 564
 565   DCHECK(GetProcess()->HasConnection());
 566
 567   Send(new FrameMsg_NewFrame(routing_id_, parent_routing_id));
 568
 569   // The renderer now has a RenderFrame for this RenderFrameHost.  Note that
 570   // this path is only used for out-of-process iframes.  Main frame RenderFrames
 571   // are created with their RenderView, and same-site iframes are created at the
 572   // time of OnCreateChildFrame.
 573   set_render_frame_created(true);
 574
 575   return true;
 576 }
 577
 578 bool RenderFrameHostImpl::IsRenderFrameLive() {
 579   // RenderFrames are created for main frames at the same time as RenderViews,
 580   // so we rely on IsRenderViewLive.  For subframes, we keep track of each
 581   // RenderFrame individually with render_frame_created_.
 582   bool is_live = !GetParent() ?
 583       render_view_host_->IsRenderViewLive() :
 584       GetProcess()->HasConnection() && render_frame_created_;
 585
 586   // Sanity check: the RenderView should always be live if the RenderFrame is.
 587   DCHECK(!is_live || render_view_host_->IsRenderViewLive());
 588
 589   return is_live;
 590 }
 591
 592 void RenderFrameHostImpl::Init() {
 593   GetProcess()->ResumeRequestsForView(routing_id_);
 594 }
 595
 596 void RenderFrameHostImpl::OnAddMessageToConsole(
 597     int32 level,
 598     const base::string16& message,
 599     int32 line_no,
 600     const base::string16& source_id) {
 601   if (delegate_->AddMessageToConsole(level, message, line_no, source_id))
 602     return;
 603
 604   // Pass through log level only on WebUI pages to limit console spew.
 605   int32 resolved_level =
 606       HasWebUIScheme(delegate_->GetMainFrameLastCommittedURL()) ? level : 0;
 607
 608   if (resolved_level >= ::logging::GetMinLogLevel()) {
 609     logging::LogMessage("CONSOLE", line_no, resolved_level).stream() << "\"" <<
 610         message << "\", source: " << source_id << " (" << line_no << ")";
 611   }
 612 }
 613
 614 void RenderFrameHostImpl::OnCreateChildFrame(int new_routing_id,
 615                                              const std::string& frame_name) {
 616   // It is possible that while a new RenderFrameHost was committed, the
 617   // RenderFrame corresponding to this host sent an IPC message to create a
 618   // frame and it is delivered after this host is swapped out.
 619   // Ignore such messages, as we know this RenderFrameHost is going away.
 620   if (rfh_state_ != RenderFrameHostImpl::STATE_DEFAULT)
 621     return;
 622
 623   RenderFrameHostImpl* new_frame = frame_tree_->AddFrame(
 624       frame_tree_node_, GetProcess()->GetID(), new_routing_id, frame_name);
 625   if (!new_frame)
 626     return;
 627
 628   // We know that the RenderFrame has been created in this case, immediately
 629   // after the CreateChildFrame IPC was sent.
 630   new_frame->set_render_frame_created(true);
 631
 632   if (delegate_)
 633     delegate_->RenderFrameCreated(new_frame);
 634 }
 635
 636 void RenderFrameHostImpl::OnDetach() {
 637   frame_tree_->RemoveFrame(frame_tree_node_);
 638 }
 639
 640 void RenderFrameHostImpl::OnFrameFocused() {
 641   frame_tree_->SetFocusedFrame(frame_tree_node_);
 642 }
 643
 644 void RenderFrameHostImpl::OnOpenURL(
 645     const FrameHostMsg_OpenURL_Params& params) {
 646   GURL validated_url(params.url);
 647   GetProcess()->FilterURL(false, &validated_url);
 648
 649   TRACE_EVENT1("navigation", "RenderFrameHostImpl::OnOpenURL",
 650                "url", validated_url.possibly_invalid_spec());
 651   frame_tree_node_->navigator()->RequestOpenURL(
 652       this, validated_url, params.referrer, params.disposition,
 653       params.should_replace_current_entry, params.user_gesture);
 654 }
 655
 656 void RenderFrameHostImpl::OnDocumentOnLoadCompleted() {
 657   // This message is only sent for top-level frames. TODO(avi): when frame tree
 658   // mirroring works correctly, add a check here to enforce it.
 659   delegate_->DocumentOnLoadCompleted(this);
 660 }
 661
 662 void RenderFrameHostImpl::OnDidStartProvisionalLoadForFrame(
 663     const GURL& url,
 664     bool is_transition_navigation) {
 665   frame_tree_node_->navigator()->DidStartProvisionalLoad(
 666       this, url, is_transition_navigation);
 667 }
 668
 669 void RenderFrameHostImpl::OnDidFailProvisionalLoadWithError(
 670     const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params) {
 671   frame_tree_node_->navigator()->DidFailProvisionalLoadWithError(this, params);
 672 }
 673
 674 void RenderFrameHostImpl::OnDidFailLoadWithError(
 675     const GURL& url,
 676     int error_code,
 677     const base::string16& error_description) {
 678   GURL validated_url(url);
 679   GetProcess()->FilterURL(false, &validated_url);
 680
 681   frame_tree_node_->navigator()->DidFailLoadWithError(
 682       this, validated_url, error_code, error_description);
 683 }
 684
 685 // Called when the renderer navigates.  For every frame loaded, we'll get this
 686 // notification containing parameters identifying the navigation.
 687 //
 688 // Subframes are identified by the page transition type.  For subframes loaded
 689 // as part of a wider page load, the page_id will be the same as for the top
 690 // level frame.  If the user explicitly requests a subframe navigation, we will
 691 // get a new page_id because we need to create a new navigation entry for that
 692 // action.
 693 void RenderFrameHostImpl::OnDidCommitProvisionalLoad(const IPC::Message& msg) {
 694   // Read the parameters out of the IPC message directly to avoid making another
 695   // copy when we filter the URLs.
 696   PickleIterator iter(msg);
 697   FrameHostMsg_DidCommitProvisionalLoad_Params validated_params;
 698   if (!IPC::ParamTraits<FrameHostMsg_DidCommitProvisionalLoad_Params>::
 699       Read(&msg, &iter, &validated_params))
 700     return;
 701   TRACE_EVENT1("navigation", "RenderFrameHostImpl::OnDidCommitProvisionalLoad",
 702                "url", validated_params.url.possibly_invalid_spec());
 703
 704   // If we're waiting for a cross-site beforeunload ack from this renderer and
 705   // we receive a Navigate message from the main frame, then the renderer was
 706   // navigating already and sent it before hearing the FrameMsg_Stop message.
 707   // We do not want to cancel the pending navigation in this case, since the
 708   // old page will soon be stopped.  Instead, treat this as a beforeunload ack
 709   // to allow the pending navigation to continue.
 710   if (is_waiting_for_beforeunload_ack_ &&
 711       unload_ack_is_for_cross_site_transition_ &&
 712       ui::PageTransitionIsMainFrame(validated_params.transition)) {
 713     base::TimeTicks approx_renderer_start_time = send_before_unload_start_time_;
 714     OnBeforeUnloadACK(true, approx_renderer_start_time, base::TimeTicks::Now());
 715     return;
 716   }
 717
 718   // If we're waiting for an unload ack from this renderer and we receive a
 719   // Navigate message, then the renderer was navigating before it received the
 720   // unload request.  It will either respond to the unload request soon or our
 721   // timer will expire.  Either way, we should ignore this message, because we
 722   // have already committed to closing this renderer.
 723   if (IsWaitingForUnloadACK())
 724     return;
 725
 726   RenderProcessHost* process = GetProcess();
 727
 728   // Attempts to commit certain off-limits URL should be caught more strictly
 729   // than our FilterURL checks below.  If a renderer violates this policy, it
 730   // should be killed.
 731   if (!CanCommitURL(validated_params.url)) {
 732     VLOG(1) << "Blocked URL " << validated_params.url.spec();
 733     validated_params.url = GURL(url::kAboutBlankURL);
 734     RecordAction(base::UserMetricsAction("CanCommitURL_BlockedAndKilled"));
 735     // Kills the process.
 736     process->ReceivedBadMessage();
 737   }
 738
 739   // Without this check, an evil renderer can trick the browser into creating
 740   // a navigation entry for a banned URL.  If the user clicks the back button
 741   // followed by the forward button (or clicks reload, or round-trips through
 742   // session restore, etc), we'll think that the browser commanded the
 743   // renderer to load the URL and grant the renderer the privileges to request
 744   // the URL.  To prevent this attack, we block the renderer from inserting
 745   // banned URLs into the navigation controller in the first place.
 746   process->FilterURL(false, &validated_params.url);
 747   process->FilterURL(true, &validated_params.referrer.url);
 748   for (std::vector<GURL>::iterator it(validated_params.redirects.begin());
 749       it != validated_params.redirects.end(); ++it) {
 750     process->FilterURL(false, &(*it));
 751   }
 752   process->FilterURL(true, &validated_params.searchable_form_url);
 753
 754   // Without this check, the renderer can trick the browser into using
 755   // filenames it can't access in a future session restore.
 756   if (!render_view_host_->CanAccessFilesOfPageState(
 757           validated_params.page_state)) {
 758     GetProcess()->ReceivedBadMessage();
 759     return;
 760   }
 761
 762   accessibility_reset_count_ = 0;
 763   frame_tree_node()->navigator()->DidNavigate(this, validated_params);
 764 }
 765
 766 RenderWidgetHostImpl* RenderFrameHostImpl::GetRenderWidgetHost() {
 767   return static_cast<RenderWidgetHostImpl*>(render_view_host_);
 768 }
 769
 770 int RenderFrameHostImpl::GetEnabledBindings() {
 771   return render_view_host_->GetEnabledBindings();
 772 }
 773
 774 void RenderFrameHostImpl::OnCrossSiteResponse(
 775     const GlobalRequestID& global_request_id,
 776     scoped_ptr<CrossSiteTransferringRequest> cross_site_transferring_request,
 777     const std::vector<GURL>& transfer_url_chain,
 778     const Referrer& referrer,
 779     ui::PageTransition page_transition,
 780     bool should_replace_current_entry) {
 781   frame_tree_node_->render_manager()->OnCrossSiteResponse(
 782       this, global_request_id, cross_site_transferring_request.Pass(),
 783       transfer_url_chain, referrer, page_transition,
 784       should_replace_current_entry);
 785 }
 786
 787 void RenderFrameHostImpl::OnDeferredAfterResponseStarted(
 788     const GlobalRequestID& global_request_id,
 789     const TransitionLayerData& transition_data) {
 790   frame_tree_node_->render_manager()->OnDeferredAfterResponseStarted(
 791       global_request_id, this);
 792
 793   if (GetParent() || !delegate_->WillHandleDeferAfterResponseStarted())
 794     frame_tree_node_->render_manager()->ResumeResponseDeferredAtStart();
 795   else
 796     delegate_->DidDeferAfterResponseStarted(transition_data);
 797 }
 798
 799 void RenderFrameHostImpl::SwapOut(RenderFrameProxyHost* proxy) {
 800   // The end of this event is in OnSwapOutACK when the RenderFrame has completed
 801   // the operation and sends back an IPC message.
 802   // The trace event may not end properly if the ACK times out.  We expect this
 803   // to be fixed when RenderViewHostImpl::OnSwapOut moves to RenderFrameHost.
 804   TRACE_EVENT_ASYNC_BEGIN0("navigation", "RenderFrameHostImpl::SwapOut", this);
 805
 806   // If this RenderFrameHost is not in the default state, it must have already
 807   // gone through this, therefore just return.
 808   if (rfh_state_ != RenderFrameHostImpl::STATE_DEFAULT) {
 809     NOTREACHED() << "RFH should be in default state when calling SwapOut.";
 810     return;
 811   }
 812
 813   SetState(RenderFrameHostImpl::STATE_PENDING_SWAP_OUT);
 814   swapout_event_monitor_timeout_->Start(
 815       base::TimeDelta::FromMilliseconds(RenderViewHostImpl::kUnloadTimeoutMS));
 816
 817   // There may be no proxy if there are no active views in the process.
 818   int proxy_routing_id = MSG_ROUTING_NONE;
 819   if (proxy) {
 820     set_render_frame_proxy_host(proxy);
 821     proxy_routing_id = proxy->GetRoutingID();
 822   }
 823
 824   if (IsRenderFrameLive())
 825     Send(new FrameMsg_SwapOut(routing_id_, proxy_routing_id));
 826
 827   if (!GetParent())
 828     delegate_->SwappedOut(this);
 829 }
 830
 831 void RenderFrameHostImpl::OnBeforeUnloadACK(
 832     bool proceed,
 833     const base::TimeTicks& renderer_before_unload_start_time,
 834     const base::TimeTicks& renderer_before_unload_end_time) {
 835   TRACE_EVENT_ASYNC_END0(
 836       "navigation", "RenderFrameHostImpl::BeforeUnload", this);
 837   DCHECK(!GetParent());
 838   render_view_host_->decrement_in_flight_event_count();
 839   render_view_host_->StopHangMonitorTimeout();
 840   // If this renderer navigated while the beforeunload request was in flight, we
 841   // may have cleared this state in OnDidCommitProvisionalLoad, in which case we
 842   // can ignore this message.
 843   // However renderer might also be swapped out but we still want to proceed
 844   // with navigation, otherwise it would block future navigations. This can
 845   // happen when pending cross-site navigation is canceled by a second one just
 846   // before OnDidCommitProvisionalLoad while current RVH is waiting for commit
 847   // but second navigation is started from the beginning.
 848   if (!is_waiting_for_beforeunload_ack_) {
 849     return;
 850   }
 851   DCHECK(!send_before_unload_start_time_.is_null());
 852
 853   // Sets a default value for before_unload_end_time so that the browser
 854   // survives a hacked renderer.
 855   base::TimeTicks before_unload_end_time = renderer_before_unload_end_time;
 856   if (!renderer_before_unload_start_time.is_null() &&
 857       !renderer_before_unload_end_time.is_null()) {
 858     // When passing TimeTicks across process boundaries, we need to compensate
 859     // for any skew between the processes. Here we are converting the
 860     // renderer's notion of before_unload_end_time to TimeTicks in the browser
 861     // process. See comments in inter_process_time_ticks_converter.h for more.
 862     base::TimeTicks receive_before_unload_ack_time = base::TimeTicks::Now();
 863     InterProcessTimeTicksConverter converter(
 864         LocalTimeTicks::FromTimeTicks(send_before_unload_start_time_),
 865         LocalTimeTicks::FromTimeTicks(receive_before_unload_ack_time),
 866         RemoteTimeTicks::FromTimeTicks(renderer_before_unload_start_time),
 867         RemoteTimeTicks::FromTimeTicks(renderer_before_unload_end_time));
 868     LocalTimeTicks browser_before_unload_end_time =
 869         converter.ToLocalTimeTicks(
 870             RemoteTimeTicks::FromTimeTicks(renderer_before_unload_end_time));
 871     before_unload_end_time = browser_before_unload_end_time.ToTimeTicks();
 872
 873     // Collect UMA on the inter-process skew.
 874     bool is_skew_additive = false;
 875     if (converter.IsSkewAdditiveForMetrics()) {
 876       is_skew_additive = true;
 877       base::TimeDelta skew = converter.GetSkewForMetrics();
 878       if (skew >= base::TimeDelta()) {
 879         UMA_HISTOGRAM_TIMES(
 880             "InterProcessTimeTicks.BrowserBehind_RendererToBrowser", skew);
 881       } else {
 882         UMA_HISTOGRAM_TIMES(
 883             "InterProcessTimeTicks.BrowserAhead_RendererToBrowser", -skew);
 884       }
 885     }
 886     UMA_HISTOGRAM_BOOLEAN(
 887         "InterProcessTimeTicks.IsSkewAdditive_RendererToBrowser",
 888         is_skew_additive);
 889
 890     base::TimeDelta on_before_unload_overhead_time =
 891         (receive_before_unload_ack_time - send_before_unload_start_time_) -
 892         (renderer_before_unload_end_time - renderer_before_unload_start_time);
 893     UMA_HISTOGRAM_TIMES("Navigation.OnBeforeUnloadOverheadTime",
 894                         on_before_unload_overhead_time);
 895
 896     frame_tree_node_->navigator()->LogBeforeUnloadTime(
 897         renderer_before_unload_start_time, renderer_before_unload_end_time);
 898   }
 899   // Resets beforeunload waiting state.
 900   is_waiting_for_beforeunload_ack_ = false;
 901   send_before_unload_start_time_ = base::TimeTicks();
 902
 903   frame_tree_node_->render_manager()->OnBeforeUnloadACK(
 904       unload_ack_is_for_cross_site_transition_, proceed,
 905       before_unload_end_time);
 906
 907   // If canceled, notify the delegate to cancel its pending navigation entry.
 908   if (!proceed)
 909     render_view_host_->GetDelegate()->DidCancelLoading();
 910 }
 911
 912 bool RenderFrameHostImpl::IsWaitingForUnloadACK() const {
 913   return render_view_host_->is_waiting_for_close_ack_ ||
 914       rfh_state_ == STATE_PENDING_SWAP_OUT;
 915 }
 916
 917 void RenderFrameHostImpl::OnSwapOutACK() {
 918   OnSwappedOut();
 919 }
 920
 921 void RenderFrameHostImpl::OnSwappedOut() {
 922   // Ignore spurious swap out ack.
 923   if (rfh_state_ != STATE_PENDING_SWAP_OUT)
 924     return;
 925
 926   TRACE_EVENT_ASYNC_END0("navigation", "RenderFrameHostImpl::SwapOut", this);
 927   swapout_event_monitor_timeout_->Stop();
 928
 929   if (frame_tree_node_->render_manager()->DeleteFromPendingList(this)) {
 930     // We are now deleted.
 931     return;
 932   }
 933
 934   // If this RFH wasn't pending deletion, then it is now swapped out.
 935   SetState(RenderFrameHostImpl::STATE_SWAPPED_OUT);
 936 }
 937
 938 void RenderFrameHostImpl::OnContextMenu(const ContextMenuParams& params) {
 939   // Validate the URLs in |params|.  If the renderer can't request the URLs
 940   // directly, don't show them in the context menu.
 941   ContextMenuParams validated_params(params);
 942   RenderProcessHost* process = GetProcess();
 943
 944   // We don't validate |unfiltered_link_url| so that this field can be used
 945   // when users want to copy the original link URL.
 946   process->FilterURL(true, &validated_params.link_url);
 947   process->FilterURL(true, &validated_params.src_url);
 948   process->FilterURL(false, &validated_params.page_url);
 949   process->FilterURL(true, &validated_params.frame_url);
 950
 951   delegate_->ShowContextMenu(this, validated_params);
 952 }
 953
 954 void RenderFrameHostImpl::OnJavaScriptExecuteResponse(
 955     int id, const base::ListValue& result) {
 956   const base::Value* result_value;
 957   if (!result.Get(0, &result_value)) {
 958     // Programming error or rogue renderer.
 959     NOTREACHED() << "Got bad arguments for OnJavaScriptExecuteResponse";
 960     return;
 961   }
 962
 963   std::map<int, JavaScriptResultCallback>::iterator it =
 964       javascript_callbacks_.find(id);
 965   if (it != javascript_callbacks_.end()) {
 966     it->second.Run(result_value);
 967     javascript_callbacks_.erase(it);
 968   } else {
 969     NOTREACHED() << "Received script response for unknown request";
 970   }
 971 }
 972
 973 void RenderFrameHostImpl::OnRunJavaScriptMessage(
 974     const base::string16& message,
 975     const base::string16& default_prompt,
 976     const GURL& frame_url,
 977     JavaScriptMessageType type,
 978     IPC::Message* reply_msg) {
 979   // While a JS message dialog is showing, tabs in the same process shouldn't
 980   // process input events.
 981   GetProcess()->SetIgnoreInputEvents(true);
 982   render_view_host_->StopHangMonitorTimeout();
 983   delegate_->RunJavaScriptMessage(this, message, default_prompt,
 984                                   frame_url, type, reply_msg);
 985 }
 986
 987 void RenderFrameHostImpl::OnRunBeforeUnloadConfirm(
 988     const GURL& frame_url,
 989     const base::string16& message,
 990     bool is_reload,
 991     IPC::Message* reply_msg) {
 992   // While a JS beforeunload dialog is showing, tabs in the same process
 993   // shouldn't process input events.
 994   GetProcess()->SetIgnoreInputEvents(true);
 995   render_view_host_->StopHangMonitorTimeout();
 996   delegate_->RunBeforeUnloadConfirm(this, message, is_reload, reply_msg);
 997 }
 998
 999 void RenderFrameHostImpl::OnRequestPlatformNotificationPermission(
1000     const GURL& origin, int request_id) {
1001   base::Callback<void(bool)> done_callback = base::Bind(
1002       &RenderFrameHostImpl::PlatformNotificationPermissionRequestDone,
1003       weak_ptr_factory_.GetWeakPtr(),
1004       request_id);
1005
1006   if (!delegate()->GetAsWebContents())
1007     return;
1008
1009   // TODO(peter): plumb user_gesture and bridge_id.
1010   GetContentClient()->browser()->RequestPermission(
1011       content::PERMISSION_NOTIFICATIONS,
1012       delegate()->GetAsWebContents(),
1013       routing_id_,
1014       origin,
1015       true,  // user_gesture,
1016       done_callback);
1017 }
1018
1019 void RenderFrameHostImpl::OnShowDesktopNotification(
1020     int notification_id,
1021     const ShowDesktopNotificationHostMsgParams& params) {
1022   scoped_ptr<DesktopNotificationDelegateImpl> delegate(
1023       new DesktopNotificationDelegateImpl(this, notification_id));
1024
1025   base::Closure cancel_callback;
1026   GetContentClient()->browser()->ShowDesktopNotification(
1027       params,
1028       GetSiteInstance()->GetBrowserContext(),
1029       GetProcess()->GetID(),
1030       delegate.Pass(),
1031       &cancel_callback);
1032
1033   cancel_notification_callbacks_[notification_id] = cancel_callback;
1034 }
1035
1036 void RenderFrameHostImpl::OnCancelDesktopNotification(int notification_id) {
1037   if (!cancel_notification_callbacks_.count(notification_id)) {
1038     NOTREACHED();
1039     return;
1040   }
1041   cancel_notification_callbacks_[notification_id].Run();
1042   cancel_notification_callbacks_.erase(notification_id);
1043 }
1044
1045 void RenderFrameHostImpl::OnTextSurroundingSelectionResponse(
1046     const base::string16& content,
1047     size_t start_offset,
1048     size_t end_offset) {
1049   render_view_host_->OnTextSurroundingSelectionResponse(
1050       content, start_offset, end_offset);
1051 }
1052
1053 void RenderFrameHostImpl::OnDidAccessInitialDocument() {
1054   delegate_->DidAccessInitialDocument();
1055 }
1056
1057 void RenderFrameHostImpl::OnDidDisownOpener() {
1058   // This message is only sent for top-level frames. TODO(avi): when frame tree
1059   // mirroring works correctly, add a check here to enforce it.
1060   delegate_->DidDisownOpener(this);
1061 }
1062
1063 void RenderFrameHostImpl::OnDidAssignPageId(int32 page_id) {
1064   // Update the RVH's current page ID so that future IPCs from the renderer
1065   // correspond to the new page.
1066   render_view_host_->page_id_ = page_id;
1067 }
1068
1069 void RenderFrameHostImpl::OnUpdateTitle(
1070     int32 page_id,
1071     const base::string16& title,
1072     blink::WebTextDirection title_direction) {
1073   // This message is only sent for top-level frames. TODO(avi): when frame tree
1074   // mirroring works correctly, add a check here to enforce it.
1075   if (title.length() > kMaxTitleChars) {
1076     NOTREACHED() << "Renderer sent too many characters in title.";
1077     return;
1078   }
1079
1080   delegate_->UpdateTitle(this, page_id, title,
1081                          WebTextDirectionToChromeTextDirection(
1082                              title_direction));
1083 }
1084
1085 void RenderFrameHostImpl::OnUpdateEncoding(const std::string& encoding_name) {
1086   // This message is only sent for top-level frames. TODO(avi): when frame tree
1087   // mirroring works correctly, add a check here to enforce it.
1088   delegate_->UpdateEncoding(this, encoding_name);
1089 }
1090
1091 void RenderFrameHostImpl::OnBeginNavigation(
1092     const FrameHostMsg_BeginNavigation_Params& params,
1093     const CommonNavigationParams& common_params) {
1094   CHECK(CommandLine::ForCurrentProcess()->HasSwitch(
1095       switches::kEnableBrowserSideNavigation));
1096   frame_tree_node()->navigator()->OnBeginNavigation(
1097       frame_tree_node(), params, common_params);
1098 }
1099
1100 void RenderFrameHostImpl::OnAccessibilityEvents(
1101     const std::vector<AccessibilityHostMsg_EventParams>& params,
1102     int reset_token) {
1103   // Don't process this IPC if either we're waiting on a reset and this
1104   // IPC doesn't have the matching token ID, or if we're not waiting on a
1105   // reset but this message includes a reset token.
1106   if (accessibility_reset_token_ != reset_token) {
1107     Send(new AccessibilityMsg_Events_ACK(routing_id_));
1108     return;
1109   }
1110   accessibility_reset_token_ = 0;
1111
1112   RenderWidgetHostViewBase* view = static_cast<RenderWidgetHostViewBase*>(
1113       render_view_host_->GetView());
1114
1115   AccessibilityMode accessibility_mode = delegate_->GetAccessibilityMode();
1116   if ((accessibility_mode != AccessibilityModeOff) && view &&
1117       RenderFrameHostImpl::IsRFHStateActive(rfh_state())) {
1118     if (accessibility_mode & AccessibilityModeFlagPlatform) {
1119       GetOrCreateBrowserAccessibilityManager();
1120       if (browser_accessibility_manager_)
1121         browser_accessibility_manager_->OnAccessibilityEvents(params);
1122     }
1123
1124     if (browser_accessibility_manager_) {
1125       // Get the frame routing ids from out-of-process iframes and
1126       // browser plugin instance ids from guests and update the mappings in
1127       // FrameAccessibility.
1128       for (unsigned int i = 0; i < params.size(); ++i) {
1129         const AccessibilityHostMsg_EventParams& param = params[i];
1130         UpdateCrossProcessIframeAccessibility(
1131             param.node_to_frame_routing_id_map);
1132         UpdateGuestFrameAccessibility(
1133             param.node_to_browser_plugin_instance_id_map);
1134       }
1135     }
1136
1137     // Send the updates to the automation extension API.
1138     std::vector<AXEventNotificationDetails> details;
1139     details.reserve(params.size());
1140     for (size_t i = 0; i < params.size(); ++i) {
1141       const AccessibilityHostMsg_EventParams& param = params[i];
1142       AXEventNotificationDetails detail(param.update.node_id_to_clear,
1143                                         param.update.nodes,
1144                                         param.event_type,
1145                                         param.id,
1146                                         GetProcess()->GetID(),
1147                                         routing_id_);
1148       details.push_back(detail);
1149     }
1150
1151     delegate_->AccessibilityEventReceived(details);
1152   }
1153
1154   // Always send an ACK or the renderer can be in a bad state.
1155   Send(new AccessibilityMsg_Events_ACK(routing_id_));
1156
1157   // The rest of this code is just for testing; bail out if we're not
1158   // in that mode.
1159   if (accessibility_testing_callback_.is_null())
1160     return;
1161
1162   for (size_t i = 0; i < params.size(); i++) {
1163     const AccessibilityHostMsg_EventParams& param = params[i];
1164     if (static_cast<int>(param.event_type) < 0)
1165       continue;
1166
1167     if (!ax_tree_for_testing_) {
1168       if (browser_accessibility_manager_) {
1169         ax_tree_for_testing_.reset(new ui::AXTree(
1170             browser_accessibility_manager_->SnapshotAXTreeForTesting()));
1171       } else {
1172         ax_tree_for_testing_.reset(new ui::AXTree());
1173         CHECK(ax_tree_for_testing_->Unserialize(param.update))
1174             << ax_tree_for_testing_->error();
1175       }
1176     } else {
1177       CHECK(ax_tree_for_testing_->Unserialize(param.update))
1178           << ax_tree_for_testing_->error();
1179     }
1180     accessibility_testing_callback_.Run(param.event_type, param.id);
1181   }
1182 }
1183
1184 void RenderFrameHostImpl::OnAccessibilityLocationChanges(
1185     const std::vector<AccessibilityHostMsg_LocationChangeParams>& params) {
1186   if (accessibility_reset_token_)
1187     return;
1188
1189   RenderWidgetHostViewBase* view = static_cast<RenderWidgetHostViewBase*>(
1190       render_view_host_->GetView());
1191   if (view && RenderFrameHostImpl::IsRFHStateActive(rfh_state())) {
1192     AccessibilityMode accessibility_mode = delegate_->GetAccessibilityMode();
1193     if (accessibility_mode & AccessibilityModeFlagPlatform) {
1194       BrowserAccessibilityManager* manager =
1195           GetOrCreateBrowserAccessibilityManager();
1196       if (manager)
1197         manager->OnLocationChanges(params);
1198     }
1199     // TODO(aboxhall): send location change events to web contents observers too
1200   }
1201 }
1202
1203 #if defined(OS_MACOSX) || defined(OS_ANDROID)
1204 void RenderFrameHostImpl::OnShowPopup(
1205     const FrameHostMsg_ShowPopup_Params& params) {
1206   RenderViewHostDelegateView* view =
1207       render_view_host_->delegate_->GetDelegateView();
1208   if (view) {
1209     view->ShowPopupMenu(this,
1210                         params.bounds,
1211                         params.item_height,
1212                         params.item_font_size,
1213                         params.selected_item,
1214                         params.popup_items,
1215                         params.right_aligned,
1216                         params.allow_multiple_selection);
1217   }
1218 }
1219
1220 void RenderFrameHostImpl::OnHidePopup() {
1221   RenderViewHostDelegateView* view =
1222       render_view_host_->delegate_->GetDelegateView();
1223   if (view)
1224     view->HidePopupMenu();
1225 }
1226 #endif
1227
1228 void RenderFrameHostImpl::SetState(RenderFrameHostImplState rfh_state) {
1229   // Only main frames should be swapped out and retained inside a proxy host.
1230   if (rfh_state == STATE_SWAPPED_OUT)
1231     CHECK(!GetParent());
1232
1233   // We update the number of RenderFrameHosts in a SiteInstance when the swapped
1234   // out status of a RenderFrameHost gets flipped to/from active.
1235   if (!IsRFHStateActive(rfh_state_) && IsRFHStateActive(rfh_state))
1236     GetSiteInstance()->increment_active_frame_count();
1237   else if (IsRFHStateActive(rfh_state_) && !IsRFHStateActive(rfh_state))
1238     GetSiteInstance()->decrement_active_frame_count();
1239
1240   // The active and swapped out state of the RVH is determined by its main
1241   // frame, since subframes should have their own widgets.
1242   if (frame_tree_node_->IsMainFrame()) {
1243     render_view_host_->set_is_active(IsRFHStateActive(rfh_state));
1244     render_view_host_->set_is_swapped_out(rfh_state == STATE_SWAPPED_OUT);
1245   }
1246
1247   // Whenever we change the RFH state to and from active or swapped out state,
1248   // we should not be waiting for beforeunload or close acks.  We clear them
1249   // here to be safe, since they can cause navigations to be ignored in
1250   // OnDidCommitProvisionalLoad.
1251   // TODO(creis): Move is_waiting_for_beforeunload_ack_ into the state machine.
1252   if (rfh_state == STATE_DEFAULT ||
1253       rfh_state == STATE_SWAPPED_OUT ||
1254       rfh_state_ == STATE_DEFAULT ||
1255       rfh_state_ == STATE_SWAPPED_OUT) {
1256     is_waiting_for_beforeunload_ack_ = false;
1257     send_before_unload_start_time_ = base::TimeTicks();
1258     render_view_host_->is_waiting_for_close_ack_ = false;
1259   }
1260   rfh_state_ = rfh_state;
1261 }
1262
1263 bool RenderFrameHostImpl::CanCommitURL(const GURL& url) {
1264   // TODO(creis): We should also check for WebUI pages here.  Also, when the
1265   // out-of-process iframes implementation is ready, we should check for
1266   // cross-site URLs that are not allowed to commit in this process.
1267
1268   // Give the client a chance to disallow URLs from committing.
1269   return GetContentClient()->browser()->CanCommitURL(GetProcess(), url);
1270 }
1271
1272 void RenderFrameHostImpl::Navigate(const FrameMsg_Navigate_Params& params) {
1273   TRACE_EVENT0("navigation", "RenderFrameHostImpl::Navigate");
1274   // Browser plugin guests are not allowed to navigate outside web-safe schemes,
1275   // so do not grant them the ability to request additional URLs.
1276   if (!GetProcess()->IsIsolatedGuest()) {
1277     ChildProcessSecurityPolicyImpl::GetInstance()->GrantRequestURL(
1278         GetProcess()->GetID(), params.common_params.url);
1279     if (params.common_params.url.SchemeIs(url::kDataScheme) &&
1280         params.base_url_for_data_url.SchemeIs(url::kFileScheme)) {
1281       // If 'data:' is used, and we have a 'file:' base url, grant access to
1282       // local files.
1283       ChildProcessSecurityPolicyImpl::GetInstance()->GrantRequestURL(
1284           GetProcess()->GetID(), params.base_url_for_data_url);
1285     }
1286   }
1287
1288   // Only send the message if we aren't suspended at the start of a cross-site
1289   // request.
1290   if (navigations_suspended_) {
1291     // Shouldn't be possible to have a second navigation while suspended, since
1292     // navigations will only be suspended during a cross-site request.  If a
1293     // second navigation occurs, RenderFrameHostManager will cancel this pending
1294     // RFH and create a new pending RFH.
1295     DCHECK(!suspended_nav_params_.get());
1296     suspended_nav_params_.reset(new FrameMsg_Navigate_Params(params));
1297   } else {
1298     // Get back to a clean state, in case we start a new navigation without
1299     // completing a RFH swap or unload handler.
1300     SetState(RenderFrameHostImpl::STATE_DEFAULT);
1301
1302     Send(new FrameMsg_Navigate(routing_id_, params));
1303   }
1304
1305   // Force the throbber to start. We do this because Blink's "started
1306   // loading" message will be received asynchronously from the UI of the
1307   // browser. But we want to keep the throbber in sync with what's happening
1308   // in the UI. For example, we want to start throbbing immediately when the
1309   // user naivgates even if the renderer is delayed. There is also an issue
1310   // with the throbber starting because the WebUI (which controls whether the
1311   // favicon is displayed) happens synchronously. If the start loading
1312   // messages was asynchronous, then the default favicon would flash in.
1313   //
1314   // Blink doesn't send throb notifications for JavaScript URLs, so we
1315   // don't want to either.
1316   if (!params.common_params.url.SchemeIs(url::kJavaScriptScheme))
1317     delegate_->DidStartLoading(this, true);
1318 }
1319
1320 void RenderFrameHostImpl::NavigateToURL(const GURL& url) {
1321   FrameMsg_Navigate_Params params;
1322   params.common_params.url = url;
1323   params.common_params.transition = ui::PAGE_TRANSITION_LINK;
1324   params.common_params.navigation_type = FrameMsg_Navigate_Type::NORMAL;
1325   params.commit_params.browser_navigation_start = base::TimeTicks::Now();
1326   params.page_id = -1;
1327   params.pending_history_list_offset = -1;
1328   params.current_history_list_offset = -1;
1329   params.current_history_list_length = 0;
1330   Navigate(params);
1331 }
1332
1333 void RenderFrameHostImpl::OpenURL(const FrameHostMsg_OpenURL_Params& params) {
1334   OnOpenURL(params);
1335 }
1336
1337 void RenderFrameHostImpl::Stop() {
1338   Send(new FrameMsg_Stop(routing_id_));
1339 }
1340
1341 void RenderFrameHostImpl::DispatchBeforeUnload(bool for_cross_site_transition) {
1342   // TODO(creis): Support beforeunload on subframes.  For now just pretend that
1343   // the handler ran and allowed the navigation to proceed.
1344   if (GetParent() || !IsRenderFrameLive()) {
1345     // We don't have a live renderer, so just skip running beforeunload.
1346     frame_tree_node_->render_manager()->OnBeforeUnloadACK(
1347         for_cross_site_transition, true, base::TimeTicks::Now());
1348     return;
1349   }
1350   TRACE_EVENT_ASYNC_BEGIN0(
1351       "navigation", "RenderFrameHostImpl::BeforeUnload", this);
1352
1353   // This may be called more than once (if the user clicks the tab close button
1354   // several times, or if she clicks the tab close button then the browser close
1355   // button), and we only send the message once.
1356   if (is_waiting_for_beforeunload_ack_) {
1357     // Some of our close messages could be for the tab, others for cross-site
1358     // transitions. We always want to think it's for closing the tab if any
1359     // of the messages were, since otherwise it might be impossible to close
1360     // (if there was a cross-site "close" request pending when the user clicked
1361     // the close button). We want to keep the "for cross site" flag only if
1362     // both the old and the new ones are also for cross site.
1363     unload_ack_is_for_cross_site_transition_ =
1364         unload_ack_is_for_cross_site_transition_ && for_cross_site_transition;
1365   } else {
1366     // Start the hang monitor in case the renderer hangs in the beforeunload
1367     // handler.
1368     is_waiting_for_beforeunload_ack_ = true;
1369     unload_ack_is_for_cross_site_transition_ = for_cross_site_transition;
1370     // Increment the in-flight event count, to ensure that input events won't
1371     // cancel the timeout timer.
1372     render_view_host_->increment_in_flight_event_count();
1373     render_view_host_->StartHangMonitorTimeout(
1374         TimeDelta::FromMilliseconds(RenderViewHostImpl::kUnloadTimeoutMS));
1375     send_before_unload_start_time_ = base::TimeTicks::Now();
1376     Send(new FrameMsg_BeforeUnload(routing_id_));
1377   }
1378 }
1379
1380 void RenderFrameHostImpl::DisownOpener() {
1381   Send(new FrameMsg_DisownOpener(GetRoutingID()));
1382 }
1383
1384 void RenderFrameHostImpl::ExtendSelectionAndDelete(size_t before,
1385                                                    size_t after) {
1386   Send(new InputMsg_ExtendSelectionAndDelete(routing_id_, before, after));
1387 }
1388
1389 void RenderFrameHostImpl::JavaScriptDialogClosed(
1390     IPC::Message* reply_msg,
1391     bool success,
1392     const base::string16& user_input,
1393     bool dialog_was_suppressed) {
1394   GetProcess()->SetIgnoreInputEvents(false);
1395   bool is_waiting = is_waiting_for_beforeunload_ack_ || IsWaitingForUnloadACK();
1396
1397   // If we are executing as part of (before)unload event handling, we don't
1398   // want to use the regular hung_renderer_delay_ms_ if the user has agreed to
1399   // leave the current page. In this case, use the regular timeout value used
1400   // during the (before)unload handling.
1401   if (is_waiting) {
1402     render_view_host_->StartHangMonitorTimeout(TimeDelta::FromMilliseconds(
1403         success ? RenderViewHostImpl::kUnloadTimeoutMS
1404                 : render_view_host_->hung_renderer_delay_ms_));
1405   }
1406
1407   FrameHostMsg_RunJavaScriptMessage::WriteReplyParams(reply_msg,
1408                                                       success, user_input);
1409   Send(reply_msg);
1410
1411   // If we are waiting for an unload or beforeunload ack and the user has
1412   // suppressed messages, kill the tab immediately; a page that's spamming
1413   // alerts in onbeforeunload is presumably malicious, so there's no point in
1414   // continuing to run its script and dragging out the process.
1415   // This must be done after sending the reply since RenderView can't close
1416   // correctly while waiting for a response.
1417   if (is_waiting && dialog_was_suppressed)
1418     render_view_host_->delegate_->RendererUnresponsive(render_view_host_);
1419 }
1420
1421 void RenderFrameHostImpl::NotificationClosed(int notification_id) {
1422   cancel_notification_callbacks_.erase(notification_id);
1423 }
1424
1425 // PlzNavigate
1426 void RenderFrameHostImpl::CommitNavigation(
1427     ResourceResponse* response,
1428     scoped_ptr<StreamHandle> body,
1429     const CommonNavigationParams& common_params,
1430     const CommitNavigationParams& commit_params) {
1431   // TODO(clamy): Check if we have to add security checks for the browser plugin
1432   // guests.
1433
1434   Send(new FrameMsg_CommitNavigation(
1435       routing_id_, response->head, body->GetURL(),
1436       common_params, commit_params));
1437   // TODO(clamy): Check if we should start the throbber for non javascript urls
1438   // here.
1439
1440   // TODO(clamy): Release the stream handle once the renderer has finished
1441   // reading it.
1442   stream_handle_ = body.Pass();
1443 }
1444
1445 void RenderFrameHostImpl::SetUpMojoIfNeeded() {
1446   if (service_registry_.get())
1447     return;
1448
1449   service_registry_.reset(new ServiceRegistryImpl());
1450   if (!GetProcess()->GetServiceRegistry())
1451     return;
1452
1453   RenderFrameSetupPtr setup;
1454   GetProcess()->GetServiceRegistry()->ConnectToRemoteService(&setup);
1455   mojo::ServiceProviderPtr service_provider;
1456   setup->GetServiceProviderForFrame(routing_id_,
1457                                     mojo::GetProxy(&service_provider));
1458   service_registry_->BindRemoteServiceProvider(
1459       service_provider.PassMessagePipe());
1460
1461 #if defined(OS_ANDROID)
1462   service_registry_android_.reset(
1463       new ServiceRegistryAndroid(service_registry_.get()));
1464 #endif
1465 }
1466
1467 void RenderFrameHostImpl::InvalidateMojoConnection() {
1468   service_registry_.reset();
1469 #if defined(OS_ANDROID)
1470   service_registry_android_.reset();
1471 #endif
1472 }
1473
1474 void RenderFrameHostImpl::PlatformNotificationPermissionRequestDone(
1475     int request_id,
1476     bool granted) {
1477   blink::WebNotificationPermission permission =
1478       granted ? blink::WebNotificationPermissionAllowed
1479               : blink::WebNotificationPermissionDenied;
1480
1481   Send(new PlatformNotificationMsg_PermissionRequestComplete(
1482       routing_id_, request_id, permission));
1483 }
1484
1485 void RenderFrameHostImpl::UpdateCrossProcessIframeAccessibility(
1486     const std::map<int32, int> node_to_frame_routing_id_map) {
1487   std::map<int32, int>::const_iterator iter;
1488   for (iter = node_to_frame_routing_id_map.begin();
1489        iter != node_to_frame_routing_id_map.end();
1490        ++iter) {
1491     // This is the id of the accessibility node that has a child frame.
1492     int32 node_id = iter->first;
1493     // The routing id from either a RenderFrame or a RenderFrameProxy.
1494     int frame_routing_id = iter->second;
1495
1496     FrameTree* frame_tree = frame_tree_node()->frame_tree();
1497     FrameTreeNode* child_frame_tree_node = frame_tree->FindByRoutingID(
1498         GetProcess()->GetID(), frame_routing_id);
1499     if (child_frame_tree_node) {
1500       FrameAccessibility::GetInstance()->AddChildFrame(
1501           this, node_id, child_frame_tree_node->frame_tree_node_id());
1502     }
1503   }
1504 }
1505
1506 void RenderFrameHostImpl::UpdateGuestFrameAccessibility(
1507     const std::map<int32, int> node_to_browser_plugin_instance_id_map) {
1508   std::map<int32, int>::const_iterator iter;
1509   for (iter = node_to_browser_plugin_instance_id_map.begin();
1510        iter != node_to_browser_plugin_instance_id_map.end();
1511        ++iter) {
1512     // This is the id of the accessibility node that hosts a plugin.
1513     int32 node_id = iter->first;
1514     // The id of the browser plugin.
1515     int browser_plugin_instance_id = iter->second;
1516     FrameAccessibility::GetInstance()->AddGuestWebContents(
1517         this, node_id, browser_plugin_instance_id);
1518   }
1519 }
1520
1521 void RenderFrameHostImpl::SetAccessibilityMode(AccessibilityMode mode) {
1522   Send(new FrameMsg_SetAccessibilityMode(routing_id_, mode));
1523 }
1524
1525 void RenderFrameHostImpl::SetAccessibilityCallbackForTesting(
1526     const base::Callback<void(ui::AXEvent, int)>& callback) {
1527   accessibility_testing_callback_ = callback;
1528 }
1529
1530 const ui::AXTree* RenderFrameHostImpl::GetAXTreeForTesting() {
1531   return ax_tree_for_testing_.get();
1532 }
1533
1534 BrowserAccessibilityManager*
1535     RenderFrameHostImpl::GetOrCreateBrowserAccessibilityManager() {
1536   RenderWidgetHostViewBase* view = static_cast<RenderWidgetHostViewBase*>(
1537       render_view_host_->GetView());
1538   if (view &&
1539       !browser_accessibility_manager_ &&
1540       !no_create_browser_accessibility_manager_for_testing_) {
1541     browser_accessibility_manager_.reset(
1542         view->CreateBrowserAccessibilityManager(this));
1543     if (browser_accessibility_manager_)
1544       UMA_HISTOGRAM_COUNTS("Accessibility.FrameEnabledCount", 1);
1545     else
1546       UMA_HISTOGRAM_COUNTS("Accessibility.FrameDidNotEnableCount", 1);
1547   }
1548   return browser_accessibility_manager_.get();
1549 }
1550
1551 #if defined(OS_WIN)
1552
1553 void RenderFrameHostImpl::SetParentNativeViewAccessible(
1554     gfx::NativeViewAccessible accessible_parent) {
1555   RenderWidgetHostViewBase* view = static_cast<RenderWidgetHostViewBase*>(
1556       render_view_host_->GetView());
1557   if (view)
1558     view->SetParentNativeViewAccessible(accessible_parent);
1559 }
1560
1561 gfx::NativeViewAccessible
1562 RenderFrameHostImpl::GetParentNativeViewAccessible() const {
1563   return delegate_->GetParentNativeViewAccessible();
1564 }
1565
1566 #elif defined(OS_MACOSX)
1567
1568 void RenderFrameHostImpl::DidSelectPopupMenuItem(int selected_index) {
1569   Send(new FrameMsg_SelectPopupMenuItem(routing_id_, selected_index));
1570 }
1571
1572 void RenderFrameHostImpl::DidCancelPopupMenu() {
1573   Send(new FrameMsg_SelectPopupMenuItem(routing_id_, -1));
1574 }
1575
1576 #elif defined(OS_ANDROID)
1577
1578 void RenderFrameHostImpl::DidSelectPopupMenuItems(
1579     const std::vector<int>& selected_indices) {
1580   Send(new FrameMsg_SelectPopupMenuItems(routing_id_, false, selected_indices));
1581 }
1582
1583 void RenderFrameHostImpl::DidCancelPopupMenu() {
1584   Send(new FrameMsg_SelectPopupMenuItems(
1585       routing_id_, true, std::vector<int>()));
1586 }
1587
1588 #endif
1589
1590 void RenderFrameHostImpl::ClearPendingTransitionRequestData() {
1591   BrowserThread::PostTask(
1592       BrowserThread::IO,
1593       FROM_HERE,
1594       base::Bind(
1595           &TransitionRequestManager::ClearPendingTransitionRequestData,
1596           base::Unretained(TransitionRequestManager::GetInstance()),
1597           GetProcess()->GetID(),
1598           routing_id_));
1599 }
1600
1601 void RenderFrameHostImpl::SetNavigationsSuspended(
1602     bool suspend,
1603     const base::TimeTicks& proceed_time) {
1604   // This should only be called to toggle the state.
1605   DCHECK(navigations_suspended_ != suspend);
1606
1607   navigations_suspended_ = suspend;
1608   if (navigations_suspended_) {
1609     TRACE_EVENT_ASYNC_BEGIN0("navigation",
1610                              "RenderFrameHostImpl navigation suspended", this);
1611   } else {
1612     TRACE_EVENT_ASYNC_END0("navigation",
1613                            "RenderFrameHostImpl navigation suspended", this);
1614   }
1615
1616   if (!suspend && suspended_nav_params_) {
1617     // There's navigation message params waiting to be sent. Now that we're not
1618     // suspended anymore, resume navigation by sending them. If we were swapped
1619     // out, we should also stop filtering out the IPC messages now.
1620     SetState(RenderFrameHostImpl::STATE_DEFAULT);
1621
1622     DCHECK(!proceed_time.is_null());
1623     suspended_nav_params_->commit_params.browser_navigation_start =
1624         proceed_time;
1625     Send(new FrameMsg_Navigate(routing_id_, *suspended_nav_params_));
1626     suspended_nav_params_.reset();
1627   }
1628 }
1629
1630 void RenderFrameHostImpl::CancelSuspendedNavigations() {
1631   // Clear any state if a pending navigation is canceled or preempted.
1632   if (suspended_nav_params_)
1633     suspended_nav_params_.reset();
1634
1635   TRACE_EVENT_ASYNC_END0("navigation",
1636                          "RenderFrameHostImpl navigation suspended", this);
1637   navigations_suspended_ = false;
1638 }
1639
1640 }  // namespace content