Split the media context from the compositor worker context.

content/common/gpu/client/command_buffer_metrics.cc

 // Copyright 2015 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/common/gpu/client/command_buffer_metrics.h"
 
 #include "base/metrics/histogram.h"
 
 namespace content {
 namespace command_buffer_metrics {
@@ skipping 94 matching lines @@
                                 CONTEXT_LOST_REASON_MAX_ENUM);
       break;
     case OFFSCREEN_VIDEO_CAPTURE_CONTEXT:
       UMA_HISTOGRAM_ENUMERATION("GPU.ContextLost.VideoCapture", reason,
                                 CONTEXT_LOST_REASON_MAX_ENUM);
       break;
     case OFFSCREEN_CONTEXT_FOR_WEBGL:
       UMA_HISTOGRAM_ENUMERATION("GPU.ContextLost.WebGL", reason,
                                 CONTEXT_LOST_REASON_MAX_ENUM);
       break;
+    case MEDIA_CONTEXT:
+      UMA_HISTOGRAM_ENUMERATION("GPU.ContextLost.Media", reason,
+                                CONTEXT_LOST_REASON_MAX_ENUM);
+      break;
     case CONTEXT_TYPE_UNKNOWN:
       UMA_HISTOGRAM_ENUMERATION("GPU.ContextLost.Unknown", reason,
                                 CONTEXT_LOST_REASON_MAX_ENUM);
       break;
   }
 }
 
 }  // anonymous namespace
 
 std::string ContextTypeToString(ContextType type) {
@@ skipping 11 matching lines @@
     case RENDER_WORKER_CONTEXT:
       return "RenderWorker";
     case RENDERER_MAINTHREAD_CONTEXT:
       return "Offscreen-MainThread";
     case GPU_VIDEO_ACCELERATOR_CONTEXT:
       return "GPU-VideoAccelerator-Offscreen";
     case OFFSCREEN_VIDEO_CAPTURE_CONTEXT:
       return "Offscreen-CaptureThread";
     case OFFSCREEN_CONTEXT_FOR_WEBGL:
       return "Offscreen-For-WebGL";
+    case MEDIA_CONTEXT:
+      return "Media";
     default:
       NOTREACHED();
       return "unknown";
   }
 }
 
 void UmaRecordContextInitFailed(ContextType type) {
   RecordContextLost(type, CONTEXT_INIT_FAILED);
 }
 
 void UmaRecordContextLost(ContextType type,
                           gpu::error::Error error,
                           gpu::error::ContextLostReason reason) {
   CommandBufferContextLostReason converted_reason =
       GetContextLostReason(error, reason);
   RecordContextLost(type, converted_reason);
 }
 
 }  // namespace command_buffer_metrics
 }  // namespace content