aura: Rename OnPropertyChanged to OnWindowPropertyChanged.

ui/aura/window_unittest.cc

Index: ui/aura/window_unittest.cc
diff --git a/ui/aura/window_unittest.cc b/ui/aura/window_unittest.cc
index 2c51f714436698707a28d3561c54b739a80a2b0a..fe965a2b8b2789ed22aba7c6f79cf907c182ea45 100644
--- a/ui/aura/window_unittest.cc
+++ b/ui/aura/window_unittest.cc
@@ -887,7 +887,7 @@ class WindowObserverTest : public WindowTest,
   }
 
   // Return a string representation of the arguments passed in
-  // OnPropertyChanged callback.
+  // OnWindowPropertyChanged callback.
   std::string PropertyChangeInfoAndClear() {
     std::string result(
         base::StringPrintf("name=%s old=%ld new=%ld",
@@ -920,9 +920,9 @@ class WindowObserverTest : public WindowTest,
     destroyed_count_++;
   }
 
-  virtual void OnPropertyChanged(Window* window,
-                                 const char* name,
-                                 void* old) OVERRIDE {
+  virtual void OnWindowPropertyChanged(Window* window,
+                                       const char* name,
+                                       void* old) OVERRIDE {
     property_name_ = std::string(name);
     old_property_value_ = reinterpret_cast<intptr_t>(old);
     new_property_value_ = reinterpret_cast<intptr_t>(window->GetProperty(name));