Correctly record and pass around navigation start time.

components/web_view/public/interfaces/frame.mojom

 // 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.
 
 module web_view.mojom;
 
 import "network/public/interfaces/url_loader.mojom";
 
 // This files defines the interfaces and structures used for frames.
 //
@@ skipping 125 matching lines @@
 
   // Indicates a new ViewTreeClient is obtained and the View provided to
   // OnEmbed() should be used.
   USE_NEW
 };
 
 interface FrameClient {
   // Called once per client. |frame_data| gives the contents of the tree.
   // |view_id| is the id of the view the FrameClient should render to. If a
   // ViewTreeClient is asked for then |view_id| is the same id as that of the
-  // View supplied to ViewTreeClient::OnEmbed().
+  // View supplied to ViewTreeClient::OnEmbed(). |navigation_start_time_ticks|
+  // is the time when the navigation resulting in this OnConnect() call was
+  // started.
   OnConnect(Frame? frame,
             uint32 change_id,
             uint32 view_id,
             ViewConnectType view_connect_type,
-            array<FrameData>? frame_data) => ();
+            array<FrameData>? frame_data,
+            int64 navigation_start_time_ticks) => ();
 
   // Called when a new frame is added to the tree.
   OnFrameAdded(uint32 change_id, FrameData frame_data);
 
   // Called when a frame is removed from the tree.
   OnFrameRemoved(uint32 change_id, uint32 frame_id);
 
   // Called when a client property changes.
   OnFrameClientPropertyChanged(uint32 frame_id,
                                string name,
@@ skipping 48 matching lines @@
   //
   // HighlightFindResults() will asynchronously call
   // OnFindInFrameCountUpdated() multiple times to report its progress.
   HighlightFindResults(int32 request_id, string search_text,
                        FindOptions options, bool reset);
 
   // Removes the tick marks and highlighting done by HighlightFindResults() in
   // this frame.
   StopHighlightingFindResults();
 };