Implement TransferableResource StructTraits

cc/resources/resource_format_utils.h

Index: cc/resources/resource_format_utils.h
diff --git a/cc/resources/resource_format_utils.h b/cc/resources/resource_format_utils.h
new file mode 100644
index 0000000000000000000000000000000000000000..200c33c9b2b2535a367c569933a17712d40b920e
--- /dev/null
+++ b/cc/resources/resource_format_utils.h
@@ -0,0 +1,17 @@
+// 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 CC_RESOURCES_RESOURCE_FORMAT_UTILS_H_
+#define CC_RESOURCES_RESOURCE_FORMAT_UTILS_H_
+
+#include "cc/resources/resource_format.h"
+#include "third_party/skia/include/core/SkImageInfo.h"
+
+namespace cc {
+
+SkColorType ResourceFormatToClosestSkColorType(ResourceFormat format);
+
+}  // namespace cc
+
+#endif  // CC_RESOURCES_RESOURCE_FORMAT_UTILS_H_