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

ash/system/toast/toast_manager_unittest.cc

 // Copyright 2016 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/display/display_manager.h"
 #include "ash/screen_util.h"
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_layout_manager.h"
 #include "ash/shell.h"
 #include "ash/system/toast/toast_manager.h"
 #include "ash/test/ash_test_base.h"
 #include "base/run_loop.h"
 #include "ui/compositor/scoped_animation_duration_scale_mode.h"
 
 namespace ash {
 
 // Long duration so the timeout doesn't occur.
 const int64_t kLongLongDuration = INT64_MAX;
 
 class DummyEvent : public ui::Event {
  public:
-  DummyEvent() : Event(ui::ET_UNKNOWN, base::TimeDelta(), 0) {}
+  DummyEvent() : Event(ui::ET_UNKNOWN, base::TimeTicks(), 0) {}
   ~DummyEvent() override {}
 };
 
 class ToastManagerTest : public test::AshTestBase {
  public:
   ToastManagerTest() {}
   ~ToastManagerTest() override {}
 
  private:
   void SetUp() override {
@@ skipping 233 matching lines @@
     // doesn't return correct value.
     gfx::Rect shelf_bounds = shelf->GetIdealBounds();
     EXPECT_FALSE(toast_bounds.Intersects(shelf_bounds));
     EXPECT_EQ(shelf_bounds.y() - 5, toast_bounds.bottom());
     EXPECT_EQ(root_bounds.bottom() - shelf_bounds.height() - 5,
               toast_bounds.bottom());
   }
 }
 
 }  // namespace ash