Expand aura::PropertyConverter support.

ui/aura/window_property.h

Index: ui/aura/window_property.h
diff --git a/ui/aura/window_property.h b/ui/aura/window_property.h
index b3774d66597c98ff5ae8c2a1ce4dc13960583ba0..6c2bbb481b656992a30d526fbc6971081cdfe482 100644
--- a/ui/aura/window_property.h
+++ b/ui/aura/window_property.h
@@ -110,21 +110,22 @@ class AURA_EXPORT PropertyHelper {
 }  // namespace aura
 
 // Macros to instantiate the property getter/setter template functions.
-#define DECLARE_EXPORTED_WINDOW_PROPERTY_TYPE(EXPORT, T)  \
-    namespace aura {                                            \
-      template<> EXPORT void aura::Window::SetProperty(         \
-          const WindowProperty<T >* property, T value) {        \
-        subtle::PropertyHelper::Set<T>(this, property, value);  \
-      }                                                         \
-      template<> EXPORT T Window::GetProperty(                  \
-          const WindowProperty<T >* property) const {           \
-        return subtle::PropertyHelper::Get<T>(this, property);  \
-      }                                                         \
-      template<> EXPORT void Window::ClearProperty(             \
-          const WindowProperty<T >* property) {                 \
-        subtle::PropertyHelper::Clear<T>(this, property);       \
-      }                                                         \
-    }
+#define DECLARE_EXPORTED_WINDOW_PROPERTY_TYPE(EXPORT, T)                  \
+  namespace aura {                                                        \
+  template <>                                                             \
+  EXPORT void Window::SetProperty(const WindowProperty<T>* property,      \
+                                  T value) {                              \
+    subtle::PropertyHelper::Set<T>(this, property, value);                \
+  }                                                                       \
+  template <>                                                             \
+  EXPORT T Window::GetProperty(const WindowProperty<T>* property) const { \
+    return subtle::PropertyHelper::Get<T>(this, property);                \
+  }                                                                       \
+  template <>                                                             \
+  EXPORT void Window::ClearProperty(const WindowProperty<T>* property) {  \
+    subtle::PropertyHelper::Clear<T>(this, property);                     \
+  }                                                                       \
+  }
 #define DECLARE_WINDOW_PROPERTY_TYPE(T)  \
     DECLARE_EXPORTED_WINDOW_PROPERTY_TYPE(, T)