cc: Adding support for RGBA_4444 tile textures

cc/resources/resource_format.h

 // Copyright 2013 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.
 
-#include "cc/output/software_frame_data.h"
+#ifndef CC_RESOURCES_RESOURCE_FORMAT_H_
+#define CC_RESOURCES_RESOURCE_FORMAT_H_
 
 namespace cc {
 
-SoftwareFrameData::SoftwareFrameData()
-    : id(0),
-      handle(base::SharedMemory::NULLHandle()) {}
-
-SoftwareFrameData::~SoftwareFrameData() {}
+enum ResourceFormat {
+  RGBA_8888,
+  RGBA_4444,
+  BGRA_8888,
+  LUMINANCE_8,
+};
 
 }  // namespace cc
+
+#endif  // CC_RESOURCES_RESOURCE_FORMAT_H_