Splits ToplevelWindowEventHandler into two

ash/wm/aura/wm_window_aura.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/wm/aura/wm_window_aura.h"
 
 #include "ash/screen_util.h"
 #include "ash/shelf/shelf_util.h"
+#include "ash/shell.h"
 #include "ash/wm/aura/aura_layout_manager_adapter.h"
 #include "ash/wm/aura/wm_globals_aura.h"
 #include "ash/wm/aura/wm_root_window_controller_aura.h"
 #include "ash/wm/common/window_state.h"
 #include "ash/wm/common/wm_layout_manager.h"
 #include "ash/wm/common/wm_window_observer.h"
 #include "ash/wm/common/wm_window_property.h"
+#include "ash/wm/resize_shadow_controller.h"
 #include "ash/wm/window_animations.h"
 #include "ash/wm/window_properties.h"
 #include "ash/wm/window_state_aura.h"
 #include "ash/wm/window_util.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/window_tree_client.h"
 #include "ui/aura/layout_manager.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_delegate.h"
 #include "ui/aura/window_property.h"
@@ skipping 459 matching lines @@
 }
 
 std::vector<WmWindow*> WmWindowAura::GetChildren() {
   return FromAuraWindows(window_->children());
 }
 
 WmWindow* WmWindowAura::GetChildByShellWindowId(int id) {
   return Get(window_->GetChildById(id));
 }
 
+void WmWindowAura::ShowResizeShadow(int component) {
+  ResizeShadowController* resize_shadow_controller =
+      Shell::GetInstance()->resize_shadow_controller();
+  if (resize_shadow_controller)
+    resize_shadow_controller->ShowShadow(window_, component);
+}
+
+void WmWindowAura::HideResizeShadow() {
+  ResizeShadowController* resize_shadow_controller =
+      Shell::GetInstance()->resize_shadow_controller();
+  if (resize_shadow_controller)
+    resize_shadow_controller->HideShadow(window_);
+}
+
 void WmWindowAura::SnapToPixelBoundaryIfNecessary() {
   SnapWindowToPixelBoundary(window_);
 }
 
 void WmWindowAura::AddObserver(WmWindowObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void WmWindowAura::RemoveObserver(WmWindowObserver* observer) {
   observers_.RemoveObserver(observer);
@@ skipping 51 matching lines @@
 }
 
 void WmWindowAura::OnWindowVisibilityChanging(aura::Window* window,
                                               bool visible) {
   FOR_EACH_OBSERVER(WmWindowObserver, observers_,
                     OnWindowVisibilityChanging(this, visible));
 }
 
 }  // namespace wm
 }  // namespace ash