PlzNavigate: Support renderer-side failed navigations

content/renderer/render_frame_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 4847 matching lines @@
   // If this frame isn't in the same process as the main frame, it may naively
   // assume that this is the first navigation in the iframe, but this may not
   // actually be the case. Inform the frame's state machine if this frame has
   // already committed other loads.
   if (request_params.has_committed_real_load && frame_->parent())
     frame_->setCommittedFirstRealLoad();
 
   pending_navigation_params_.reset(new NavigationParams(
       common_params, StartNavigationParams(), request_params));
 
-  // Inform the browser of the start of the provisional load. This is needed so
-  // that the load is properly tracked by the WebNavigation API.
-  Send(new FrameHostMsg_DidStartProvisionalLoad(
-      routing_id_, common_params.url, common_params.navigation_start));
-
   // Send the provisional load failure.
   blink::WebURLError error =
       CreateWebURLError(common_params.url, has_stale_copy_in_cache, error_code);
   WebURLRequest failed_request = CreateURLRequestForNavigation(
       common_params, std::unique_ptr<StreamOverrideParameters>(),
       frame_->isViewSourceModeEnabled());
-  SendFailedProvisionalLoad(failed_request, error, frame_);
 
   if (!ShouldDisplayErrorPageForFailedLoad(error_code, common_params.url)) {
     // The browser expects this frame to be loading an error page. Inform it
     // that the load stopped.
     if (!frame_->isLoading())
       Send(new FrameHostMsg_DidStopLoading(routing_id_));
     return;
   }
 
   // Make sure errors are not shown in view source mode.
@@ skipping 1459 matching lines @@
   // event target. Potentially a Pepper plugin will receive the event.
   // In order to tell whether a plugin gets the last mouse event and which it
   // is, we set |pepper_last_mouse_event_target_| to null here. If a plugin gets
   // the event, it will notify us via DidReceiveMouseEvent() and set itself as
   // |pepper_last_mouse_event_target_|.
   pepper_last_mouse_event_target_ = nullptr;
 #endif
 }
 
 }  // namespace content