Add gfx::ImageSkia and icon support to aura::PropertyConverter.

ui/aura/mus/property_converter.h

 // Copyright 2016 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_MUS_PROPERTY_CONVERTER_H_
 #define UI_AURA_MUS_PROPERTY_CONVERTER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 43 matching lines @@
 
   // Register a property to support conversion between mus and aura.
   template<typename T>
   void RegisterProperty(const WindowProperty<T>* property,
                         const char* transport_name) {
     primitive_properties_[property] =
         PropertyNames(property->name, transport_name);
   }
 
   // Specializations for properties to pointer types supporting mojo conversion.
+  void RegisterProperty(const WindowProperty<gfx::ImageSkia*>* property,
+                        const char* transport_name);
   void RegisterProperty(const WindowProperty<gfx::Rect*>* property,
                         const char* transport_name);
   void RegisterProperty(const WindowProperty<std::string*>* property,
                         const char* transport_name);
   void RegisterProperty(const WindowProperty<base::string16*>* property,
                         const char* transport_name);
 
  private:
   // A pair with the aura::WindowProperty::name and the mus property name.
   using PropertyNames = std::pair<const char*, const char*>;
   // A map of aura::WindowProperty<T> to its aura and mus property names.
   // This supports the internal codepaths for primitive types, eg. T=bool.
   std::map<const void*, PropertyNames> primitive_properties_;
 
   // Maps of aura::WindowProperty<T> to their mus property names.
   // This supports types that can be serialized for Mojo, eg. T=std::string*.
+  std::map<const WindowProperty<gfx::ImageSkia*>*, const char*>
+      image_properties_;
   std::map<const WindowProperty<gfx::Rect*>*, const char*> rect_properties_;
   std::map<const WindowProperty<std::string*>*, const char*> string_properties_;
   std::map<const WindowProperty<base::string16*>*, const char*>
       string16_properties_;
 
   DISALLOW_COPY_AND_ASSIGN(PropertyConverter);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_MUS_PROPERTY_CONVERTER_H_