Fix sys tray baloon shown when extensions use getMediaStream().

chrome/browser/media/media_stream_capture_indicator.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 "chrome/browser/media/media_stream_capture_indicator.h"
 
 #include "base/bind.h"
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 153 matching lines @@
   for (content::MediaStreamDevices::const_iterator it = devices.begin();
        it != devices.end(); ++it) {
     if (it->type == content::MEDIA_TAB_AUDIO_CAPTURE ||
         it->type == content::MEDIA_TAB_VIDEO_CAPTURE) {
       ++mirroring_ref_count_;
     } else if (it->type == content::MEDIA_SCREEN_VIDEO_CAPTURE) {
       ++screen_capture_ref_count_;
       stop_screen_capture_callback_ = close_callback;
     } else if (content::IsAudioMediaType(it->type)) {
       ++audio_ref_count_;
+      incremented_audio_count = true;
     } else if (content::IsVideoMediaType(it->type)) {
       ++video_ref_count_;
+      incremented_video_count = true;
     } else {
       NOTIMPLEMENTED();
     }
   }
 
   if (incremented_audio_count && incremented_video_count)
     return IDS_MEDIA_STREAM_STATUS_TRAY_BALLOON_BODY_AUDIO_AND_VIDEO;
   else if (incremented_audio_count)
     return IDS_MEDIA_STREAM_STATUS_TRAY_BALLOON_BODY_AUDIO_ONLY;
   else if (incremented_video_count)
@@ skipping 406 matching lines @@
   }
 
   UpdateNotificationUserInterface();
 }
 
 void MediaStreamCaptureIndicator::OnStopScreenCapture(
     const base::Closure& stop) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   stop.Run();
 }