Ensure View invalidates Widget::root_layers_ when LayerOwner::RecreateLayer is invoked

ui/views/view.h

 // Copyright (c) 2012 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 UI_VIEWS_VIEW_H_
 #define UI_VIEWS_VIEW_H_
 
 #include <algorithm>
 #include <map>
 #include <set>
@@ skipping 299 matching lines @@
   void SetTransform(const gfx::Transform& transform);
 
   // Sets whether this view paints to a layer. A view paints to a layer if
   // either of the following are true:
   // . the view has a non-identity transform.
   // . SetPaintToLayer(true) has been invoked.
   // View creates the Layer only when it exists in a Widget with a non-NULL
   // Compositor.
   void SetPaintToLayer(bool paint_to_layer);
 
+  // Overridden from ui::LayerOwner:
+  scoped_ptr<ui::Layer> RecreateLayer() override;
+
   // RTL positioning -----------------------------------------------------------
 
   // Methods for accessing the bounds and position of the view, relative to its
   // parent. The position returned is mirrored if the parent view is using a RTL
   // layout.
   //
   // NOTE: in the vast majority of the cases, the mirroring implementation is
   //       transparent to the View subclasses and therefore you should use the
   //       bounds() accessor instead.
   gfx::Rect GetMirroredBounds() const;
@@ skipping 1233 matching lines @@
   // Belongs to this view, but it's reference-counted on some platforms
   // so we can't use a scoped_ptr. It's dereferenced in the destructor.
   NativeViewAccessibility* native_view_accessibility_;
 
   DISALLOW_COPY_AND_ASSIGN(View);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_VIEW_H_