Disable GMB VideoFrames if GPU compositing is disabled.

content/renderer/render_thread_impl.cc

 // Copyright (c) 2012 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 "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <utility>
@@ skipping 1405 matching lines @@
   if (!media_context_provider->BindToCurrentThread())
     return nullptr;
   media_context_provider->SetupLock();
 
   scoped_refptr<base::SingleThreadTaskRunner> media_task_runner =
       GetMediaThreadTaskRunner();
   const bool enable_video_accelerator =
       !cmd_line->HasSwitch(switches::kDisableAcceleratedVideoDecode);
   const bool enable_gpu_memory_buffer_video_frames =
 #if defined(OS_MACOSX) || defined(OS_LINUX)
-      !cmd_line->HasSwitch(switches::kDisableGpuMemoryBufferVideoFrames);
+      !cmd_line->HasSwitch(switches::kDisableGpuMemoryBufferVideoFrames) &&
+      !cmd_line->HasSwitch(switches::kDisableGpuCompositing);

[danakj, 2016/05/12 01:00:08]

We also don't use gpu compositing when the channel tells us not to. Should we
match? (idk why we have both)

https://code.google.com/p/chromium/codesearch#chromium/src/content/renderer/r...

 #else
       cmd_line->HasSwitch(switches::kEnableGpuMemoryBufferVideoFrames);
 #endif
   std::vector<unsigned> image_texture_targets;
   std::string video_frame_image_texture_target_string =
       cmd_line->GetSwitchValueASCII(switches::kVideoImageTextureTarget);
   StringToUintVector(video_frame_image_texture_target_string,
                      &image_texture_targets);
 
   gpu_factories_.push_back(RendererGpuVideoAcceleratorFactories::Create(
@@ skipping 633 matching lines @@
 }
 
 void RenderThreadImpl::PendingRenderFrameConnect::OnConnectionError() {
   size_t erased =
       RenderThreadImpl::current()->pending_render_frame_connects_.erase(
           routing_id_);
   DCHECK_EQ(1u, erased);
 }
 
 }  // namespace content