Mash: Show app icons in shelf based on the Widget's app icon

components/mus/public/cpp/property_type_converters.h

Index: components/mus/public/cpp/property_type_converters.h
diff --git a/components/mus/public/cpp/property_type_converters.h b/components/mus/public/cpp/property_type_converters.h
index eac34a8ef911ccd42f4777a2136b960e71cdf413..5f331f703081f493c1c2bdb0aeac298190e6d2f8 100644
--- a/components/mus/public/cpp/property_type_converters.h
+++ b/components/mus/public/cpp/property_type_converters.h
@@ -11,6 +11,8 @@
 #include "base/strings/string16.h"
 #include "mojo/public/cpp/bindings/type_converter.h"
 
+class SkBitmap;
+
 namespace gfx {
 class Rect;
 class Size;
@@ -21,6 +23,8 @@ namespace mojo {
 // TODO(beng): these methods serialize types used for standard properties
 //             to vectors of bytes used by Window::SetSharedProperty().
 //             replace this with serialization code generated @ bindings.
+//             This would be especially useful for SkBitmap, which could be
+//             replaced with the skia.Bitmap mojom struct serialization.
 
 template <>
 struct TypeConverter<const std::vector<uint8_t>, gfx::Rect> {
@@ -67,6 +71,17 @@ struct TypeConverter<std::string, const std::vector<uint8_t>> {
   static std::string Convert(const std::vector<uint8_t>& input);
 };
 
+// NOTE: These methods only serialize and deserialize the common case of ARGB

[msw, 2016/03/24 17:40:54]

nit: RGBA 8888, not ARGB, right? (as you say in the impl)

[James Cook, 2016/03/25 15:39:28]

Done.

+// bitmaps with premultiplied alpha.
+template <>
+struct TypeConverter<const std::vector<uint8_t>, SkBitmap> {
+  static const std::vector<uint8_t> Convert(const SkBitmap& input);
+};
+template <>
+struct TypeConverter<SkBitmap, const std::vector<uint8_t>> {
+  static SkBitmap Convert(const std::vector<uint8_t>& input);
+};
+
 }  // namespace mojo
 
 #endif  // COMPONENTS_MUS_PUBLIC_CPP_PROPERTY_TYPE_CONVERTERS_H_