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

ash/system/chromeos/rotation/tray_rotation_lock_unittest.cc

 // 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.
 
 #include "ash/system/chromeos/rotation/tray_rotation_lock.h"
 
 #include <memory>
 
 #include "ash/ash_switches.h"
 #include "ash/display/display_manager.h"
@@ skipping 214 matching lines @@
 // rotation locked, and that the tray view becomes visible.
 TEST_F(TrayRotationLockTest, PerformActionOnDefaultView) {
   MaximizeModeController* maximize_mode_controller = Shell::GetInstance()->
       maximize_mode_controller();
   ScreenOrientationController* screen_orientation_controller =
       Shell::GetInstance()->screen_orientation_controller();
   ASSERT_FALSE(screen_orientation_controller->rotation_locked());
   maximize_mode_controller->EnableMaximizeModeWindowManager(true);
   ASSERT_FALSE(tray_view()->visible());
 
-  ui::GestureEvent tap(
-      0, 0, 0, base::TimeDelta(), ui::GestureEventDetails(ui::ET_GESTURE_TAP));
+  ui::GestureEvent tap(0, 0, 0, base::TimeTicks(),
+                       ui::GestureEventDetails(ui::ET_GESTURE_TAP));
   default_view()->OnGestureEvent(&tap);
   EXPECT_TRUE(screen_orientation_controller->rotation_locked());
   EXPECT_TRUE(tray_view()->visible());
 
   maximize_mode_controller->EnableMaximizeModeWindowManager(false);
 }
 
 // Tests that when the tray is created without the internal display being known,
 // that it will still display correctly once the internal display is known.
 TEST_F(TrayRotationLockTest, InternalDisplayNotAvailableAtCreation) {
@@ skipping 23 matching lines @@
       ->EnableMaximizeModeWindowManager(true);
   DestroyTrayView();
   Shell::GetInstance()->screen_orientation_controller()->SetRotationLocked(
       true);
   Shell::GetInstance()
       ->maximize_mode_controller()
       ->EnableMaximizeModeWindowManager(false);
 }
 
 }  // namespace ash