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

ui/views/controls/textfield/textfield.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_CONTROLS_TEXTFIELD_TEXTFIELD_H_
 #define UI_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 448 matching lines @@
 
   // Is the user potentially dragging and dropping from this view?
   bool initiating_drag_;
 
   // A timer and point used to modify the selection when dragging.
   base::RepeatingTimer drag_selection_timer_;
   gfx::Point last_drag_location_;
 
   // State variables used to track double and triple clicks.
   size_t aggregated_clicks_;
-  base::TimeDelta last_click_time_;
+  base::TimeTicks last_click_time_;
   gfx::Point last_click_location_;
   gfx::Range double_click_word_;
 
   std::unique_ptr<ui::TouchEditingControllerDeprecated>
       touch_selection_controller_;
 
   // Used to track touch drag starting location and offset to enable touch
   // scrolling.
   gfx::Point drag_start_location_;
   int drag_start_display_offset_;
 
   // Tracks if touch editing handles are hidden because user has started
   // scrolling. If |true|, handles are shown after scrolling ends.
   bool touch_handles_hidden_due_to_scroll_;
 
   // Context menu related members.
   std::unique_ptr<ui::SimpleMenuModel> context_menu_contents_;
   std::unique_ptr<views::MenuRunner> context_menu_runner_;
 
   // Used to bind callback functions to this object.
   base::WeakPtrFactory<Textfield> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Textfield);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_H_