cc: Adding support for RGBA_4444 tile textures

cc/resources/resource.h

Index: cc/resources/resource.h
diff --git a/cc/resources/resource.h b/cc/resources/resource.h
index 1c658223649375835534122493f4e399a51f6e95..44c039967349d65696bd6bb7442c93e70003b7cb 100644
--- a/cc/resources/resource.h
+++ b/cc/resources/resource.h
@@ -15,23 +15,24 @@ namespace cc {
 class CC_EXPORT Resource {
  public:
   Resource() : id_(0) {}
-  Resource(unsigned id, gfx::Size size, GLenum format)
+  Resource(unsigned id,
+           gfx::Size size,
+           ResourceProvider::TextureFormat format)
       : id_(id),
         size_(size),
         format_(format) {}
 
   ResourceProvider::ResourceId id() const { return id_; }
   gfx::Size size() const { return size_; }
-  GLenum format() const { return format_; }
-
+  ResourceProvider::TextureFormat format() const { return format_; }
   size_t bytes() const;
 
-  static size_t BytesPerPixel(GLenum format);
-  static size_t MemorySizeBytes(gfx::Size size, GLenum format);
+  static size_t MemorySizeBytes(
+      gfx::Size size, ResourceProvider::TextureFormat type);
 
  protected:
   void set_id(ResourceProvider::ResourceId id) { id_ = id; }
-  void set_dimensions(gfx::Size size, GLenum format) {
+  void set_dimensions(gfx::Size size, ResourceProvider::TextureFormat format) {
     size_ = size;
     format_ = format;
   }
@@ -39,7 +40,7 @@ class CC_EXPORT Resource {
  private:
   ResourceProvider::ResourceId id_;
   gfx::Size size_;
-  GLenum format_;
+  ResourceProvider::TextureFormat format_;
 
   DISALLOW_COPY_AND_ASSIGN(Resource);
 };