Re-implement overscan & Implement Display Rotation

ui/aura/root_window_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_ROOT_WINDOW_HOST_H_
 #define UI_AURA_ROOT_WINDOW_HOST_H_
 
 #include <vector>
 
 #include "base/message_loop.h"
 #include "ui/aura/aura_export.h"
 #include "ui/base/cursor/cursor.h"
 #include "ui/gfx/native_widget_types.h"
 
 class SkCanvas;
 
 namespace gfx {
+class Insets;
 class Point;
 class Rect;
 class Size;
 }
 
 namespace aura {
 
 class RootWindow;
 class RootWindowHostDelegate;
 
@@ skipping 25 matching lines @@
   // Hides the RootWindowHost.
   virtual void Hide() = 0;
 
   // Toggles the host's full screen state.
   virtual void ToggleFullScreen() = 0;
 
   // Gets/Sets the size of the RootWindowHost.
   virtual gfx::Rect GetBounds() const = 0;
   virtual void SetBounds(const gfx::Rect& bounds) = 0;
 
+  // Sets/Gets the insets that specifies the effective root window area
+  // in the host window.
+  virtual gfx::Insets GetInsets() const = 0;
+  virtual void SetInsets(const gfx::Insets& insets) = 0;

[oshima, 2013/03/11 17:41:41]

I originally had insets in root_window.h, but moved to
host impl. I now feel having in root_window might have been
better because all other impl has to have empty impl.
I can be convinced either way, so let me know if you have preference.

+
   // Returns the location of the RootWindow on native screen.
   virtual gfx::Point GetLocationOnNativeScreen() const = 0;
 
   // Sets the OS capture to the root window.
   virtual void SetCapture() = 0;
 
   // Releases OS capture of the root window.
   virtual void ReleaseCapture() = 0;
 
   // Sets the currently displayed cursor.
@@ skipping 41 matching lines @@
   // Called when the device scale factor of the root window has chagned.
   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) = 0;
 
   // Stop listening events in preparation for shutdown.
   virtual void PrepareForShutdown() = 0;
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_ROOT_WINDOW_HOST_H_