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

ui/views/widget/desktop_aura/desktop_drag_drop_client_aurax11.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_WIDGET_DESKTOP_AURA_DESKTOP_DRAG_DROP_CLIENT_AURAX11_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_DRAG_DROP_CLIENT_AURAX11_H_
 
 #include <X11/Xlib.h>
 
 #include <memory>
@@ skipping 81 matching lines @@
   void Drop(aura::Window* target, const ui::LocatedEvent& event) override;
   void DragCancel() override;
   bool IsDragDropInProgress() override;
 
   // Overridden from aura::WindowObserver:
   void OnWindowDestroyed(aura::Window* window) override;
 
   // Overridden from X11WholeScreenMoveLoopDelegate:
   void OnMouseMovement(const gfx::Point& screen_point,
                        int flags,
-                       base::TimeDelta event_time) override;
+                       base::TimeTicks event_time) override;
   void OnMouseReleased() override;
   void OnMoveLoopEnded() override;
 
  protected:
   // The following methods are virtual for the sake of testing.
 
   // Creates a move loop.
   virtual std::unique_ptr<X11MoveLoop> CreateMoveLoop(
       X11MoveLoopDelegate* delegate);
 
@@ skipping 169 matching lines @@
   gfx::Vector2d drag_widget_offset_;
 
   base::WeakPtrFactory<DesktopDragDropClientAuraX11> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopDragDropClientAuraX11);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_DRAG_DROP_CLIENT_AURAX11_H_