aura: Rename OnPropertyChanged to OnWindowPropertyChanged.

ui/aura_shell/toplevel_layout_manager.h

Index: ui/aura_shell/toplevel_layout_manager.h
diff --git a/ui/aura_shell/toplevel_layout_manager.h b/ui/aura_shell/toplevel_layout_manager.h
index d8774fec794f41aac2dd0e73286f1b23a5f5ab9d..4c66ce7d2ead853c3211c3ea9cc0f8d4d7966bfc 100644
--- a/ui/aura_shell/toplevel_layout_manager.h
+++ b/ui/aura_shell/toplevel_layout_manager.h
@@ -41,9 +41,9 @@ class AURA_SHELL_EXPORT ToplevelLayoutManager : public aura::LayoutManager,
                               const gfx::Rect& requested_bounds) OVERRIDE;
 
   // WindowObserver overrides:
-  virtual void OnPropertyChanged(aura::Window* window,
-                                 const char* name,
-                                 void* old) OVERRIDE;
+  virtual void OnWindowPropertyChanged(aura::Window* window,
+                                       const char* name,
+                                       void* old) OVERRIDE;
 
  private:
   typedef std::set<aura::Window*> Windows;