Add AudioInputControllerCaptureStartupSuccess UMA

media/audio/audio_input_controller.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 MEDIA_AUDIO_AUDIO_INPUT_CONTROLLER_H_
 #define MEDIA_AUDIO_AUDIO_INPUT_CONTROLLER_H_
 
 #include <string>
 #include "base/atomicops.h"
 #include "base/callback.h"
@@ skipping 235 matching lines @@
                 const std::string& device_id);
   void DoCreateForStream(AudioInputStream* stream_to_control,
                          bool enable_nodata_timer);
   void DoRecord();
   void DoClose();
   void DoReportError();
   void DoSetVolume(double volume);
   void DoSetAutomaticGainControl(bool enabled);
   void DoOnData(scoped_ptr<uint8[]> data, uint32 size);
 
+  // Method to check if we get recorded data after a stream was started,
+  // and log the result to UMA.
+  void FirstCheckForNoData();
+
   // Method which ensures that OnError() is triggered when data recording
   // times out. Called on the audio thread.
   void DoCheckForNoData();
 
   // Helper method that stops, closes, and NULL:s |*stream_|.
   void DoStopCloseAndClearStream();
 
   void SetDataIsActive(bool enabled);
   bool GetDataIsActive();
 
@@ skipping 40 matching lines @@
   UserInputMonitor* user_input_monitor_;
 
   size_t prev_key_down_count_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioInputController);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_INPUT_CONTROLLER_H_