Correctly record and pass around navigation start time.

components/web_view/web_view_impl.cc

 // Copyright 2015 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 "components/web_view/web_view_impl.h"
 
 #include <queue>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 81 matching lines @@
     devtools_service::DevToolsAgentPtr forward_agent;
     frame_connection->application_connection()->ConnectToService(
         &forward_agent);
     devtools_agent_->AttachFrame(forward_agent.Pass(), &client_properties);
   }
 
   mojom::FrameClient* frame_client = frame_connection->frame_client();
   const uint32_t content_handler_id = frame_connection->GetContentHandlerID();
   frame_tree_.reset(new FrameTree(content_handler_id, content_,
                                   view_tree_client.Pass(), this, frame_client,
-                                  frame_connection.Pass(), client_properties));
+                                  frame_connection.Pass(), client_properties,
+                                  pending_load->navigation_start_time()));
 }
 
 void WebViewImpl::PreOrderDepthFirstTraverseTree(Frame* node,
                                                  std::vector<Frame*>* output) {
   output->push_back(node);
   for (Frame* child : node->children())
     PreOrderDepthFirstTraverseTree(child, output);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ skipping 171 matching lines @@
   std::vector<Frame*> all_frames;
   PreOrderDepthFirstTraverseTree(frame_tree_->root(), &all_frames);
   return all_frames;
 }
 
 mojom::WebViewClient* WebViewImpl::GetWebViewClient() {
   return client_.get();
 }
 
 }  // namespace web_view