Add latency info to input events sent to RenderWidget.

content/common/view_messages.h

 // Copyright (c) 2012 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 page rendering.
 // Multiply-included message file, hence no include guard.
 
 #include "base/process.h"
 #include "base/shared_memory.h"
 #include "base/string16.h"
@@ skipping 849 matching lines @@
 
 // Tells the render view that a SwapBuffers was completed. Typically,
 // SwapBuffers requests go from renderer -> GPU process -> browser. Most
 // platforms still use the GfxCxt3D Echo for receiving the SwapBuffers Ack.
 // Using Echo routes the ack from browser -> GPU process -> renderer, while this
 // Ack goes directly from browser -> renderer. This is not used for the threaded
 // compositor path.
 IPC_MESSAGE_ROUTED0(ViewMsg_SwapBuffers_ACK)
 
 // Sends an input event to the render widget.
-IPC_MESSAGE_ROUTED2(ViewMsg_HandleInputEvent,
+IPC_MESSAGE_ROUTED3(ViewMsg_HandleInputEvent,
                     IPC::WebInputEventPointer /* event */,
+                    cc::LatencyInfo /* latency_info */,
                     bool /* is_keyboard_shortcut */)
 
 // Tells the render widget that a smooth scroll completed.
 IPC_MESSAGE_ROUTED1(ViewMsg_SmoothScrollCompleted,
                     int /* gesture_id */)
 
 // This message notifies the renderer that the next key event is bound to one
 // or more pre-defined edit commands. If the next key event is not handled
 // by webkit, the specified edit commands shall be executed against current
 // focused frame.
@@ skipping 1520 matching lines @@
 // cached by the OS. Please see RenderMessageFilter::OnPreCacheFontCharacters
 // for details.
 IPC_SYNC_MESSAGE_CONTROL2_0(ViewHostMsg_PreCacheFontCharacters,
                             LOGFONT /* font_data */,
                             string16 /* characters */)
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent ViewMsg, then ifdefs for platform specific ViewMsg, then platform
 // independent ViewHostMsg, then ifdefs for platform specific ViewHostMsg.