Set scale/orientation property to aura root window

ui/aura/root_window.h

Index: ui/aura/root_window.h
diff --git a/ui/aura/root_window.h b/ui/aura/root_window.h
index e376599df412bdf38407846056881aa517d279a9..de7b68d0f4dbb595a85ec046e520152b24e2c278 100644
--- a/ui/aura/root_window.h
+++ b/ui/aura/root_window.h
@@ -105,6 +105,9 @@ class AURA_EXPORT RootWindow : public ui::CompositorDelegate,
   // Sets the bounds of the host window.
   void SetHostBounds(const gfx::Rect& size_in_pixel);
 
+  // Sets the hosting platform specific property.

[Daniel Erat, 2013/01/30 21:04:27]

nits: "Sets a property on the host window using platform-specific means."

[oshima, 2013/01/30 23:45:53]

Done.

+  void SetHostWindowProperty(const std::string& name, int value);

[Daniel Erat, 2013/01/30 21:04:27]

if you plan to store something other than ints later, SetHostWindowIntProperty()
or SetIntPropertyOnHostWindow() may be better (or perhaps it'd be better to just
store strings to begin with)

[oshima, 2013/01/30 23:45:53]

I have no plan to add other than ints, but agree that it's better
to include int for clarify. Done.

+
   // Returns where the RootWindow is on screen.
   gfx::Point GetHostOrigin() const;