Delete MediaStreamManager in the same way as AudioManager

content/browser/renderer_host/media/video_capture_host_unittest.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 <map>
 #include <string>
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 230 matching lines @@
 
     // Simulate closing the IPC channel.
     host_->OnChannelClosing();
 
     // Release the reference to the mock object. The object will be destructed
     // on message_loop_.
     host_ = NULL;
 
     // We need to continue running message_loop_ to complete all destructions.
     message_loop_->RunAllPending();
+
+    // Delete the IO message loop to delete the device thread,
+    // AudioInputDeviceManager and VideoCaptureManager.
+    message_loop_.reset();
   }
 
   void StartCapture() {
     InSequence s;
     // 1. First - get info about the new resolution
     EXPECT_CALL(*host_, OnDeviceInfo(kDeviceId));
 
     // 2. Change state to started
     EXPECT_CALL(*host_, OnStateChanged(kDeviceId,
                                        video_capture::kStarted));
@@ skipping 120 matching lines @@
 }
 
 #ifdef DUMP_VIDEO
 TEST_F(VideoCaptureHostTest, CaptureAndDumpVideoVga) {
   CaptureAndDumpVideo(640, 480, 30);
 }
 TEST_F(VideoCaptureHostTest, CaptureAndDump720P) {
   CaptureAndDumpVideo(1280, 720, 30);
 }
 #endif