Adds WmWindow and converts WindowState to use it

ash/wm/immersive_fullscreen_controller.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/immersive_fullscreen_controller.h"
 
 #include <set>
 
 #include "ash/ash_constants.h"
 #include "ash/shell.h"
 #include "ash/wm/resize_handle_window_targeter.h"
 #include "ash/wm/window_state.h"
+#include "ash/wm/window_state_aura.h"
 #include "base/metrics/histogram.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/capture_client.h"
 #include "ui/aura/client/cursor_client.h"
 #include "ui/aura/client/screen_position_client.h"
 #include "ui/aura/env.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/gfx/animation/slide_animation.h"
 #include "ui/gfx/display.h"
@@ skipping 940 matching lines @@
       ::wm::GetTransientChildren(native_window_);
   for (size_t i = 0; i < transient_children.size(); ++i) {
     aura::Window* transient_child = transient_children[i];
     views::View* anchor_view = GetAnchorView(transient_child);
     if (anchor_view && top_container_->Contains(anchor_view))
       bubble_observer_->StartObserving(transient_child);
   }
 }
 
 }  // namespace ash