Browser-wide audio mirroring for TabCapture API

content/browser/renderer_host/media/media_stream_manager.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 "content/browser/renderer_host/media/media_stream_manager.h"
 
 #include <list>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 91 matching lines @@
 
     if (options.video_type != MEDIA_TAB_VIDEO_CAPTURE &&
         options.audio_type != MEDIA_TAB_AUDIO_CAPTURE)
       return;
 
     MediaObserver* media_observer =
         GetContentClient()->browser()->GetMediaObserver();
     if (media_observer == NULL)
       return;
 
+    // If we appended a device_id scheme, we want to remove it when notifying
+    // observers which may be in different modules since this scheme is only
+    // used internally within the content module.
+    std::string device_id =
+        WebContentsCaptureUtil::StripWebContentsDeviceScheme(
+            requested_device_id);
+
     media_observer->OnMediaRequestStateChanged(
       render_process_id, render_view_id,
       MediaStreamDevice(
-          stream_type, requested_device_id, requested_device_id), new_state);
+          stream_type, device_id, device_id), new_state);
   }
 
   MediaRequestState getState(MediaStreamType stream_type) const {
     return state_[stream_type];
   }
 
   MediaStreamRequester* requester;  // Can be NULL.
   StreamOptions options;
   RequestType type;
   int render_process_id;
@@ skipping 948 matching lines @@
   }
 
   // Always do enumeration even though some enumeration is in progress,
   // because those enumeration commands could be sent before these devices
   // change.
   ++active_enumeration_ref_count_[stream_type];
   GetDeviceManager(stream_type)->EnumerateDevices();
 }
 
 }  // namespace content