Split the media context from the compositor worker context.

content/common/gpu_process_launch_causes.h

 // 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.
 
 #ifndef CONTENT_COMMON_GPU_PROCESS_LAUNCH_CAUSES_H_
 #define CONTENT_COMMON_GPU_PROCESS_LAUNCH_CAUSES_H_
 
 namespace content {
 
 // If you change this enum you also need to update
@@ skipping 13 matching lines @@
   CAUSE_FOR_GPU_LAUNCH_GPU_MEMORY_BUFFER_ALLOCATE,
   CAUSE_FOR_GPU_LAUNCH_JPEGDECODEACCELERATOR_INITIALIZE,
   CAUSE_FOR_GPU_LAUNCH_MOJO_SETUP,
   CAUSE_FOR_GPU_LAUNCH_GET_GPU_SERVICE_REGISTRY,
   CAUSE_FOR_GPU_LAUNCH_BROWSER_SHARED_MAIN_THREAD_CONTEXT,
   CAUSE_FOR_GPU_LAUNCH_RENDERER_SHARED_MAIN_THREAD_CONTEXT,
   CAUSE_FOR_GPU_LAUNCH_WEBGL_CONTEXT,
   CAUSE_FOR_GPU_LAUNCH_SHARED_WORKER_THREAD_CONTEXT,
   CAUSE_FOR_GPU_LAUNCH_RENDERER_VERIFY_GPU_COMPOSITING,
   CAUSE_FOR_GPU_LAUNCH_DISPLAY_COMPOSITOR_CONTEXT,
+  CAUSE_FOR_GPU_LAUNCH_MEDIA_CONTEXT,
 
   // All new values should be inserted above this point so that
   // existing values continue to match up with those in histograms.xml.
   CAUSE_FOR_GPU_LAUNCH_MAX_ENUM
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_PROCESS_LAUNCH_CAUSES_H_