gpu/mac: Disable ycbcr 422 feature flag.

Prework to removing uyvy output format references in
gpu_memory_buffer_video_frame_pool. UYVY is no longer used, in favor of yuv420.

Bug: 988538
Change-Id: Ice37e5f2f3975cd9c784d4a5470906e23a13345a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1713668Reviewed-by: Eric Karl <ericrk@chromium.org>
Reviewed-by: Daniele Castagna <dcastagna@chromium.org>
Commit-Queue: Sasha McIntosh <sashamcintosh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#683402}

gpu/command_buffer/service/feature_info.cc

@@ -1113,12 +1113,6 @@ void FeatureInfo::InitializeFeatures() {
         gfx::BufferFormat::YUV_420_BIPLANAR);
   }
 
-  if (gfx::HasExtension(extensions, "GL_APPLE_ycbcr_422")) {
-    AddExtensionString("GL_CHROMIUM_ycbcr_422_image");
-    feature_flags_.chromium_image_ycbcr_422 = true;
-    feature_flags_.gpu_memory_buffer_formats.Add(gfx::BufferFormat::UYVY_422);
-  }
-
 #if defined(OS_MACOSX)
   // Mac can create GLImages out of XR30 IOSurfaces only after High Sierra.
   feature_flags_.chromium_image_xr30 = base::mac::IsAtLeastOS10_13();

gpu/command_buffer/service/feature_info_unittest.cc

@@ -1715,11 +1715,6 @@ TEST_P(FeatureInfoTest, InitializeEXT_texture_norm16) {
       info_->validators()->texture_internal_format_storage.IsValid(GL_R16_EXT));
 }
 
-TEST_P(FeatureInfoTest, InitializeCHROMIUM_ycbcr_422_imageTrue) {
-  SetupInitExpectations("GL_APPLE_ycbcr_422");
-  EXPECT_TRUE(info_->feature_flags().chromium_image_ycbcr_422);
-}
-
 TEST_P(FeatureInfoTest, InitializeCHROMIUM_unpremultiply_and_dither_copy) {
   SetupInitExpectations("");
   switch (GetParam()) {