Correctly record and pass around navigation start time.

components/web_view/frame_tree.h

 // 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.
 
 #ifndef COMPONENTS_WEB_VIEW_FRAME_TREE_H_
 #define COMPONENTS_WEB_VIEW_FRAME_TREE_H_
 
+#include "base/time/time.h"
 #include "components/mus/public/interfaces/view_tree.mojom.h"
 #include "components/web_view/frame.h"
 #include "third_party/mojo/src/mojo/public/cpp/bindings/array.h"
 #include "url/gurl.h"
 
 namespace mojo {
 class String;
 }
 
 namespace web_view {
@@ skipping 16 matching lines @@
   // outlives FrameTree.
   // |client_properties| is the client properties for the root frame.
   // |root_app_id| is a unique identifier of the app providing |root_client|.
   // See Frame for details on app id's.
   FrameTree(uint32_t root_app_id,
             mus::View* view,
             mojo::ViewTreeClientPtr view_tree_client,
             FrameTreeDelegate* delegate,
             mojom::FrameClient* root_client,
             scoped_ptr<FrameUserData> user_data,
-            const Frame::ClientPropertyMap& client_properties);
+            const Frame::ClientPropertyMap& client_properties,
+            base::TimeTicks navigation_start_time);
   ~FrameTree();
 
   const Frame* root() const { return root_; }
   Frame* root() { return root_; }
   uint32_t change_id() const { return change_id_; }
 
  private:
   friend class Frame;
 
   // Creates a new Frame parented to |parent|. The Frame is considered shared in
@@ skipping 28 matching lines @@
   double progress_;
 
   uint32_t change_id_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameTree);
 };
 
 }  // namespace web_view
 
 #endif  // COMPONENTS_WEB_VIEW_FRAME_TREE_H_