PlzNavigate: fix timing issue in app window creation

content/browser/frame_host/navigator_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/browser/frame_host/navigator_impl.h"
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/time/time.h"
 #include "content/browser/frame_host/frame_tree.h"
@@ skipping 720 matching lines @@
     DCHECK(!render_frame_host->GetParent());
     render_frame_host->render_view_host()->Send(
         new ViewMsg_EnableViewSourceMode(
             render_frame_host->render_view_host()->GetRoutingID()));
   }
 
   CheckWebUIRendererDoesNotDisplayNormalURL(
       render_frame_host, navigation_request->common_params().url);
 
   navigation_request->TransferNavigationHandleOwnership(render_frame_host);
+  delegate_->ReadyToCommitNavigation(render_frame_host->navigation_handle());
   render_frame_host->CommitNavigation(response, body.Pass(),
                                       navigation_request->common_params(),
                                       navigation_request->request_params());
 
 }
 
 // PlzNavigate
 void NavigatorImpl::FailedNavigation(FrameTreeNode* frame_tree_node,
                                      bool has_stale_copy_in_cache,
                                      int error_code) {
@@ skipping 10 matching lines @@
   }
 
   // Select an appropriate renderer to show the error page.
   RenderFrameHostImpl* render_frame_host =
       frame_tree_node->render_manager()->GetFrameHostForNavigation(
           *navigation_request);
   CheckWebUIRendererDoesNotDisplayNormalURL(
       render_frame_host, navigation_request->common_params().url);
 
   navigation_request->TransferNavigationHandleOwnership(render_frame_host);
+  delegate_->ReadyToCommitNavigation(render_frame_host->navigation_handle());
   render_frame_host->FailedNavigation(navigation_request->common_params(),
                                       navigation_request->request_params(),
                                       has_stale_copy_in_cache, error_code);
 }
 
 // PlzNavigate
 void NavigatorImpl::CancelNavigation(FrameTreeNode* frame_tree_node) {
   CHECK(base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableBrowserSideNavigation));
   frame_tree_node->ResetNavigationRequest(false);
@@ skipping 162 matching lines @@
       entry->set_should_replace_entry(pending_entry->should_replace_entry());
       entry->SetRedirectChain(pending_entry->GetRedirectChain());
     }
     controller_->SetPendingEntry(entry.Pass());
     if (delegate_)
       delegate_->NotifyChangedNavigationState(content::INVALIDATE_TYPE_URL);
   }
 }
 
 }  // namespace content