(DEPRECATED) Send navigation_start to browser process in DidStartProvisionalLoad

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 265 matching lines @@
   IPC_STRUCT_TRAITS_MEMBER(lofi_state)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_TRAITS_BEGIN(content::BeginNavigationParams)
   IPC_STRUCT_TRAITS_MEMBER(method)
   IPC_STRUCT_TRAITS_MEMBER(headers)
   IPC_STRUCT_TRAITS_MEMBER(load_flags)
   IPC_STRUCT_TRAITS_MEMBER(has_user_gesture)
   IPC_STRUCT_TRAITS_MEMBER(skip_service_worker)
   IPC_STRUCT_TRAITS_MEMBER(request_context_type)
+  IPC_STRUCT_TRAITS_MEMBER(renderer_navigation_start)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_TRAITS_BEGIN(content::StartNavigationParams)
   IPC_STRUCT_TRAITS_MEMBER(is_post)
   IPC_STRUCT_TRAITS_MEMBER(extra_headers)
   IPC_STRUCT_TRAITS_MEMBER(browser_initiated_post_data)
 #if defined(OS_ANDROID)
   IPC_STRUCT_TRAITS_MEMBER(has_user_gesture)
 #endif
   IPC_STRUCT_TRAITS_MEMBER(transferred_request_child_id)
@@ skipping 428 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_DidStartProvisionalLoadForFrame,
-                    GURL /* url */)
+IPC_MESSAGE_ROUTED2(FrameHostMsg_DidStartProvisionalLoadForFrame,
+                    GURL /* url */,
+                    double /* navigation_start */)

[clamy, 2015/10/28 12:40:01]

We should send a base::TimeTicks or a base::Time. Timing are only converted to
doubles because of blink. Whenever we get them back, we should convert them to a
proper timing primitive.

[Charlie Harrison, 2015/10/28 14:45:00]

Agree. I did it this way due to how we get the info from blink. Converting
doubles to TimeTicks is a little unorthodox but I think it's possible.

 
 // 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 455 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.