Send navigation_start to the browser in DidStartProvisionalLoad IPC

content/common/frame_messages.h

 // 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.
 
 // IPC messages for interacting with frames.
 // Multiply-included message file, hence no include guard.
 
 #include "cc/surfaces/surface_id.h"
 #include "cc/surfaces/surface_sequence.h"
 #include "content/common/content_export.h"
@@ skipping 741 matching lines @@
 // Indicates the renderer process is gone.  This actually is sent by the
 // browser process to itself, but keeps the interface cleaner.
 IPC_MESSAGE_ROUTED2(FrameHostMsg_RenderProcessGone,
                     int, /* this really is base::TerminationStatus */
                     int /* exit_code */)
 
 // Sent by the renderer when the frame becomes focused.
 IPC_MESSAGE_ROUTED0(FrameHostMsg_FrameFocused)
 
 // Sent when the renderer starts a provisional load for a frame.
-IPC_MESSAGE_ROUTED1(FrameHostMsg_DidStartProvisionalLoad, GURL /* url */)
+IPC_MESSAGE_ROUTED2(FrameHostMsg_DidStartProvisionalLoad,
+                    GURL /* url */,
+                    base::TimeTicks /* navigation_start */);
 
 // Sent when the renderer fails a provisional load with an error.
 IPC_MESSAGE_ROUTED1(FrameHostMsg_DidFailProvisionalLoadWithError,
                     FrameHostMsg_DidFailProvisionalLoadWithError_Params)
 
 // Notifies the browser that a frame in the view has changed. This message
 // has a lot of parameters and is packed/unpacked by functions defined in
 // render_messages.h.
 IPC_MESSAGE_ROUTED1(FrameHostMsg_DidCommitProvisionalLoad,
                     FrameHostMsg_DidCommitProvisionalLoad_Params)
@@ skipping 463 matching lines @@
 IPC_MESSAGE_ROUTED1(FrameHostMsg_ShowPopup,
                     FrameHostMsg_ShowPopup_Params)
 IPC_MESSAGE_ROUTED0(FrameHostMsg_HidePopup)
 
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent FrameMsg, then ifdefs for platform specific FrameMsg, then
 // platform independent FrameHostMsg, then ifdefs for platform specific
 // FrameHostMsg.