Adds WmWindow and converts WindowState to use it

ash/frame/caption_buttons/frame_size_button.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/frame/caption_buttons/frame_size_button.h"
 
 #include "ash/metrics/user_metrics_recorder.h"
 #include "ash/screen_util.h"
 #include "ash/shell.h"
 #include "ash/wm/common/wm_event.h"
 #include "ash/wm/window_state.h"
+#include "ash/wm/window_state_aura.h"
 #include "ash/wm/window_util.h"
 #include "ash/wm/workspace/phantom_window_controller.h"
 #include "base/i18n/rtl.h"
 #include "ui/gfx/geometry/vector2d.h"
 #include "ui/views/widget/widget.h"
 
 namespace {
 
 // The default delay between the user pressing the size button and the buttons
 // adjacent to the size button morphing into buttons for snapping left and
@@ skipping 250 matching lines @@
 void FrameSizeButton::SetButtonsToNormalMode(
     FrameSizeButtonDelegate::Animate animate) {
   in_snap_mode_ = false;
   snap_type_ = SNAP_NONE;
   set_buttons_to_snap_mode_timer_.Stop();
   delegate_->SetButtonsToNormal(animate);
   phantom_window_controller_.reset();
 }
 
 }  // namespace ash