Revert of Clean up WindowEventDispatcher some more.

ash/wm/overview/window_overview.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/wm/overview/window_overview.h"
 
 #include <algorithm>
 
 #include "ash/metrics/user_metrics_recorder.h"
 #include "ash/screen_util.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/switchable_windows.h"
 #include "ash/wm/overview/scoped_transform_overview_window.h"
 #include "ash/wm/overview/window_selector.h"
 #include "ash/wm/overview/window_selector_item.h"
 #include "base/metrics/histogram.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/aura/client/cursor_client.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
-#include "ui/compositor/layer_animation_observer.h"
 #include "ui/compositor/scoped_layer_animation_settings.h"
 #include "ui/events/event.h"
 #include "ui/views/background.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
 
 namespace {
 
 // Conceptually the window overview is a table or grid of cells having this
@@ skipping 418 matching lines @@
 }
 
 gfx::Rect WindowOverview::GetSelectionBounds(size_t index) {
   gfx::Rect bounds((*windows_)[index]->bounds());
   bounds.Inset(-kWindowOverviewSelectionPadding,
                -kWindowOverviewSelectionPadding);
   return bounds;
 }
 
 }  // namespace ash