Add CHROMIUM_ycbcr_422_image extension.

gpu/command_buffer/service/feature_info.h

Index: gpu/command_buffer/service/feature_info.h
diff --git a/gpu/command_buffer/service/feature_info.h b/gpu/command_buffer/service/feature_info.h
index 4a55c958fe468b0b50f0b0599b06e236c75e88ef..6d68b00ee14478cd751fe0285624c642461c61e2 100644
--- a/gpu/command_buffer/service/feature_info.h
+++ b/gpu/command_buffer/service/feature_info.h
@@ -79,6 +79,7 @@ class GPU_EXPORT FeatureInfo : public base::RefCounted<FeatureInfo> {
     bool blend_equation_advanced;
     bool blend_equation_advanced_coherent;
     bool ext_texture_rg;
+    bool ext_ycbcr_422_format;

[reveman, 2015/08/26 18:21:08]

chromium_texture_ycbcr_422 or chromium_image_ycbcr_422 (this is not an EXT
extension) to be consistent with ext_texture_rg

[Daniele Castagna, 2015/08/26 18:40:08]

Renamed to |chromium_image_ycbcr_422|.

     bool enable_subscribe_uniform;
     bool emulate_primitive_restart_fixed_index;
     bool ext_render_buffer_format_bgra8888;