cc: Enable GL_RED_EXT for YUV resources

cc/resources/resource_provider.h

Index: cc/resources/resource_provider.h
diff --git a/cc/resources/resource_provider.h b/cc/resources/resource_provider.h
index 95a10d57f3af884d5fc7fc03ccab2d51bf10b1e3..3a8d2e0f9ec0325ae56e64de274f6caa3ac073a9 100644
--- a/cc/resources/resource_provider.h
+++ b/cc/resources/resource_provider.h
@@ -99,6 +99,7 @@ class CC_EXPORT ResourceProvider {
     return use_rgba_4444_texture_format_ ? RGBA_4444 : best_texture_format_;
   }
   ResourceFormat best_texture_format() const { return best_texture_format_; }
+  ResourceFormat yuv_resource_format() const { return yuv_resource_format_; }
   bool use_sync_query() const { return use_sync_query_; }
   size_t num_resources() const { return resources_.size(); }
 
@@ -578,6 +579,7 @@ class CC_EXPORT ResourceProvider {
   bool use_texture_format_bgra_;
   bool use_texture_usage_hint_;
   bool use_compressed_texture_etc1_;
+  ResourceFormat yuv_resource_format_;
   scoped_ptr<TextureUploader> texture_uploader_;
   int max_texture_size_;
   ResourceFormat best_texture_format_;