Move root_window.* to window_event_dispatcher.*

ash/test/ash_test_helper_unittest.cc

 // Copyright 2013 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/test/ash_test_helper.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
-#include "ui/aura/root_window.h"
+#include "ui/aura/window_event_dispatcher.h"
 #include "ui/views/widget/widget.h"
 
 // Tests for AshTestHelper. Who will watch the watchers? And who will test
 // the tests?
 class AshTestHelperTest : public testing::Test {
  public:
   AshTestHelperTest() {}
   virtual ~AshTestHelperTest() {}
 
   virtual void SetUp() OVERRIDE {
@@ skipping 29 matching lines @@
   using views::Widget;
   scoped_ptr<Widget> w1(new Widget);
   Widget::InitParams params;
   params.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   params.context = ash_test_helper()->CurrentContext();
   w1->Init(params);
   w1->Show();
   EXPECT_TRUE(w1->IsActive());
   EXPECT_TRUE(w1->IsVisible());
 }