Change ui::Event::time_stamp from TimeDelta to TimeTicks

ui/views/win/hwnd_message_handler.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.
 
 #ifndef UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_H_
 #define UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_H_
 
 #include <windows.h>
 
 #include <stddef.h>
@@ skipping 479 matching lines @@
   bool IsSynthesizedMouseMessage(unsigned int message,
                                  int message_time,
                                  LPARAM l_param);
 
   // Provides functionality to transition a frame to DWM.
   void PerformDwmTransition();
 
   // Generates a touch event and adds it to the |touch_events| parameter.
   // |point| is the point where the touch was initiated.
   // |id| is the event id associated with the touch event.
-  // |event_time| is the current time used for latency calculation.
-  // |time_stamp| is the time delta associated with the message.
+  // |time_stamp| is the time stamp associated with the message.
   void GenerateTouchEvent(ui::EventType event_type,
                           const gfx::Point& point,
                           unsigned int id,
-                          base::TimeTicks event_time,
-                          base::TimeDelta time_stamp,
+                          base::TimeTicks time_stamp,
                           TouchEvents* touch_events);
 
   // Handles WM_NCLBUTTONDOWN and WM_NCMOUSEMOVE messages on the caption.
   // Returns true if the message was handled.
   bool HandleMouseInputForCaption(unsigned int message,
                                   WPARAM w_param,
                                   LPARAM l_param);
 
   // Helper function for setting the bounds of the HWND. For more information
   // please refer to the SetBounds() function.
@@ skipping 142 matching lines @@
 
   // The factory used with BEGIN_SAFE_MSG_MAP_EX.
   base::WeakPtrFactory<HWNDMessageHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HWNDMessageHandler);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_H_