Scale bounds in DesktopWindowTreeHostMus and in calls to SetBounds.

ui/aura/window_tree_host.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_AURA_WINDOW_TREE_HOST_H_
 #define UI_AURA_WINDOW_TREE_HOST_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 58 matching lines @@
   const Window* window() const { return window_; }
 
   ui::EventProcessor* event_processor();
 
   WindowEventDispatcher* dispatcher() {
     return const_cast<WindowEventDispatcher*>(
         const_cast<const WindowTreeHost*>(this)->dispatcher());
   }
   const WindowEventDispatcher* dispatcher() const { return dispatcher_.get(); }
 
-  ui::Compositor* compositor() { return compositor_.get(); }
+  ui::Compositor* compositor() const { return compositor_.get(); }

[sky, 2016/11/21 22:27:25]

const functions should return const objects, otherwise you can easily circumvent
const correctness.

 
   // Gets/Sets the root window's transform.
   virtual gfx::Transform GetRootTransform() const;
   virtual void SetRootTransform(const gfx::Transform& transform);
   virtual gfx::Transform GetInverseRootTransform() const;
 
   // Sets padding applied to the output surface. The output surface is sized to
   // to the size of the host plus output surface padding. |window()| is offset
   // by |padding|, that is, |window|'s origin is set to padding.left(),
   // padding.top().
@@ skipping 169 matching lines @@
   bool owned_input_method_;
 
   gfx::Insets output_surface_padding_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTreeHost);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_WINDOW_TREE_HOST_H_