Cast: add UMA for video encode accelerator initialization result.

media/cast/sender/external_video_encoder.cc

 // Copyright 2014 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 "media/cast/sender/external_video_encoder.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/shared_memory.h"
 #include "base/message_loop/message_loop.h"
+#include "base/metrics/histogram.h"
 #include "media/base/video_frame.h"
 #include "media/base/video_util.h"
 #include "media/cast/cast_defines.h"
 #include "media/cast/logging/logging_defines.h"
 #include "media/cast/net/cast_transport_config.h"
 #include "media/video/video_encode_accelerator.h"
 
 namespace media {
 namespace cast {
 class LocalVideoEncodeAcceleratorClient;
@@ skipping 85 matching lines @@
         break;
       case CODEC_VIDEO_FAKE:
         NOTREACHED() << "Fake software video encoder cannot be external";
         break;
       default:
         NOTREACHED() << "Video codec not specified or not supported";
         break;
     }
     max_frame_rate_ = video_config.max_frame_rate;
 
-    if (!video_encode_accelerator_->Initialize(
-            media::VideoFrame::I420,
-            gfx::Size(video_config.width, video_config.height),
-            output_profile,
-            video_config.start_bitrate,
-            this)) {
+    bool result = video_encode_accelerator_->Initialize(
+        media::VideoFrame::I420,
+        gfx::Size(video_config.width, video_config.height),
+        output_profile,
+        video_config.start_bitrate,
+        this);
+
+    UMA_HISTOGRAM_BOOLEAN("Cast.Sender.VideoEncodeAcceleratorInitializeSuccess",
+                          result);
+    if (!result) {
       NotifyError(VideoEncodeAccelerator::kInvalidArgumentError);
       return;
     }
 
     // Wait until shared memory is allocated to indicate that encoder is
     // initialized.
   }
 
   // Free the HW.
   void Destroy() {
@@ skipping 292 matching lines @@
   key_frame_requested_ = true;
 }
 
 // Inform the encoder to only reference frames older or equal to frame_id;
 void ExternalVideoEncoder::LatestFrameIdToReference(uint32 /*frame_id*/) {
   // Do nothing not supported.
 }
 
 }  //  namespace cast
 }  //  namespace media