Add distinction between RGB and RGBA native texture video frames and resources

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 <algorithm>
 
 #include "base/bind.h"
 #include "base/trace_event/trace_event.h"
@@ skipping 393 matching lines @@
   DCHECK_EQ(frame_format, media::VideoFrame::NATIVE_TEXTURE);
   if (!context_provider_)
     return VideoFrameExternalResources();
 
   size_t textures =
       media::VideoFrame::NumTextures(video_frame->texture_format());
   DCHECK_GE(textures, 1u);
   VideoFrameExternalResources external_resources;
   switch (video_frame->texture_format()) {
     case media::VideoFrame::TEXTURE_RGBA:
+    case media::VideoFrame::TEXTURE_RGB:
       DCHECK_EQ(1u, textures);
       switch (video_frame->mailbox_holder(0).texture_target) {
         case GL_TEXTURE_2D:
-          external_resources.type = VideoFrameExternalResources::RGB_RESOURCE;
+          if (video_frame->texture_format() == media::VideoFrame::TEXTURE_RGB)
+            external_resources.type = VideoFrameExternalResources::RGB_RESOURCE;
+          else
+            external_resources.type =
+                VideoFrameExternalResources::RGBA_RESOURCE;
           break;
         case GL_TEXTURE_EXTERNAL_OES:
           external_resources.type =
               VideoFrameExternalResources::STREAM_TEXTURE_RESOURCE;
           break;
         case GL_TEXTURE_RECTANGLE_ARB:
           external_resources.type = VideoFrameExternalResources::IO_SURFACE;
           break;
         default:
           NOTREACHED();
@@ skipping 48 matching lines @@
     resource_it->ref_count = 0;
     updater->DeleteResource(resource_it);
     return;
   }
 
   --resource_it->ref_count;
   DCHECK_GE(resource_it->ref_count, 0);
 }
 
 }  // namespace cc