Moves CustomFrameViewAsh to common

ash/mus/bridge/wm_window_mus.h

 // 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.
 
 #ifndef ASH_MUS_BRIDGE_WM_WINDOW_MUS_H_
 #define ASH_MUS_BRIDGE_WM_WINDOW_MUS_H_
 
 #include <memory>
 
 #include "ash/common/shell_window_ids.h"
@@ skipping 191 matching lines @@
   bool CanMinimize() const override;
   bool CanResize() const override;
   bool CanActivate() const override;
   void StackChildAtTop(WmWindow* child) override;
   void StackChildAtBottom(WmWindow* child) override;
   void StackChildAbove(WmWindow* child, WmWindow* target) override;
   void StackChildBelow(WmWindow* child, WmWindow* target) override;
   std::vector<WmWindow*> GetChildren() override;
   void ShowResizeShadow(int component) override;
   void HideResizeShadow() override;
+  void InstallResizeHandleWindowTargeter(
+      WmImmersiveFullscreenController* immersive_fullscreen_controller)
+      override;
   void SetBoundsInScreenBehaviorForChildren(
       BoundsInScreenBehavior behavior) override;
   void SetSnapsChildrenToPhysicalPixelBoundary() override;
   void SnapToPixelBoundaryIfNecessary() override;
   void SetChildrenUseExtendedHitRegion() override;
   void SetDescendantsStayInSameRootWindow(bool value) override;
   std::unique_ptr<views::View> CreateViewWithRecreatedLayers() override;
   void AddObserver(WmWindowObserver* observer) override;
   void RemoveObserver(WmWindowObserver* observer) override;
   bool HasObserver(const WmWindowObserver* observer) const override;
@@ skipping 53 matching lines @@
 
   base::ObserverList<WmTransientWindowObserver, true> transient_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(WmWindowMus);
 };
 
 }  // namespace mus
 }  // namespace ash
 
 #endif  // ASH_MUS_BRIDGE_WM_WINDOW_MUS_H_