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

ui/views/widget/desktop_aura/desktop_drag_drop_client_aurax11.cc

 // 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.
 
 #include "ui/views/widget/desktop_aura/desktop_drag_drop_client_aurax11.h"
 
 #include <X11/Xatom.h>
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 747 matching lines @@
 }
 
 void DesktopDragDropClientAuraX11::OnWindowDestroyed(aura::Window* window) {
   DCHECK_EQ(target_window_, window);
   target_window_ = NULL;
 }
 
 void DesktopDragDropClientAuraX11::OnMouseMovement(
     const gfx::Point& screen_point,
     int flags,
-    base::TimeDelta event_time) {
+    base::TimeTicks event_time) {
   if (drag_widget_.get()) {
     display::Display display =
         display::Screen::GetScreen()->GetDisplayNearestWindow(
             drag_widget_->GetNativeWindow());
     gfx::Point scaled_point = gfx::ScaleToRoundedPoint(
         screen_point, 1.f / display.device_scale_factor());
     drag_widget_->SetBounds(
         gfx::Rect(scaled_point - drag_widget_offset_, drag_image_size_));
     drag_widget_->StackAtTop();
   }
 
   const int kModifiers = ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN |
                          ui::EF_ALT_DOWN | ui::EF_COMMAND_DOWN |
                          ui::EF_LEFT_MOUSE_BUTTON |
                          ui::EF_MIDDLE_MOUSE_BUTTON |
                          ui::EF_RIGHT_MOUSE_BUTTON;
   current_modifier_state_ = flags & kModifiers;
 
   repeat_mouse_move_timer_.Stop();
-  ProcessMouseMove(screen_point, event_time.InMilliseconds());
+  ProcessMouseMove(screen_point,
+                   (event_time - base::TimeTicks()).InMilliseconds());
 }
 
 void DesktopDragDropClientAuraX11::OnMouseReleased() {
   repeat_mouse_move_timer_.Stop();
 
   if (source_state_ != SOURCE_STATE_OTHER) {
     // The user has previously released the mouse and is clicking in
     // frustration.
     move_loop_->EndMoveLoop();
     return;
@@ skipping 428 matching lines @@
     for (int x = 0; x < in_bitmap->width(); ++x) {
       if (SkColorGetA(in_row[x]) > kMinAlpha)
         return true;
     }
   }
 
   return false;
 }
 
 }  // namespace views