Use high precision timestamp for Event.timestamp

components/test_runner/event_sender.h

 // Copyright 2014 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 COMPONENTS_TEST_RUNNER_EVENT_SENDER_H_
 #define COMPONENTS_TEST_RUNNER_EVENT_SENDER_H_
 
 #include <queue>
 #include <string>
 #include <vector>
@@ skipping 166 matching lines @@
                              float* radius_x,
                              float* radius_y);
 
   void FinishDragAndDrop(const blink::WebMouseEvent&, blink::WebDragOperation);
 
   void DoMouseUp(const blink::WebMouseEvent&);
   void DoMouseMove(const blink::WebMouseEvent&);
   void ReplaySavedEvents();
   bool HandleInputEventOnViewOrPopup(const blink::WebInputEvent&);
 
+  double last_event_timestamp() { return last_event_timestamp_; }
+
   bool force_layout_on_events() const { return force_layout_on_events_; }
   void set_force_layout_on_events(bool force) {
     force_layout_on_events_ = force;
   }
 
   bool is_drag_mode() const { return is_drag_mode_; }
   void set_is_drag_mode(bool drag_mode) { is_drag_mode_ = drag_mode; }
 
 #if defined(OS_WIN)
   int wm_key_down() const { return wm_key_down_; }
@@ skipping 75 matching lines @@
   blink::WebPoint last_click_pos_;
 
   // The last button number passed to mouseDown and mouseUp.
   // Used to determine whether the click count continues to increment or not.
   static blink::WebMouseEvent::Button last_button_type_;
 
   blink::WebDragOperation current_drag_effect_;
 
   uint32 time_offset_ms_;
   int click_count_;
+  // Timestamp (in seconds) of the last event that was dispatched
+  double last_event_timestamp_;
 
   base::WeakPtrFactory<EventSender> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(EventSender);
 };
 
 }  // namespace test_runner
 
 #endif  // COMPONENTS_TEST_RUNNER_EVENT_SENDER_H_