chromeos: decode video into NV12 format instead of RGBA in vaapi decoder

cc/resources/video_resource_updater.cc

 // 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/resources/video_resource_updater.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 46 matching lines @@
           NOTREACHED();
           break;
       }
       break;
     case media::PIXEL_FORMAT_I420:
       return VideoFrameExternalResources::YUV_RESOURCE;
       break;
     case media::PIXEL_FORMAT_NV12:
       switch (video_frame->mailbox_holder(0).texture_target) {
         case GL_TEXTURE_EXTERNAL_OES:
-        case GL_TEXTURE_2D:
-          return VideoFrameExternalResources::YUV_RESOURCE;
+        case GL_TEXTURE_2D: {
+          bool is_dual_gmb = video_frame->mailbox_holder(1).texture_target ==
+                             video_frame->mailbox_holder(0).texture_target;
+          return is_dual_gmb ? VideoFrameExternalResources::YUV_RESOURCE
+                             : VideoFrameExternalResources::RGB_RESOURCE;
+        }
         case GL_TEXTURE_RECTANGLE_ARB:
           return VideoFrameExternalResources::RGB_RESOURCE;
         default:
           NOTREACHED();
           break;
       }
       break;
     case media::PIXEL_FORMAT_YV12:
     case media::PIXEL_FORMAT_YV16:
     case media::PIXEL_FORMAT_YV24:
@@ skipping 624 matching lines @@
   if (lost_resource) {
     resource_it->clear_refs();
     updater->DeleteResource(resource_it);
     return;
   }
 
   resource_it->remove_ref();
 }
 
 }  // namespace cc