enable video capture to support sharing across multiple renderer processes

content/browser/renderer_host/media/video_capture_manager_unittest.cc

 // Copyright (c) 2011 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.
 
 // Unit test for VideoCaptureManager
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 46 matching lines @@
 
 namespace {
 
 // Needed as an input argument to Start()
 class MockFrameObserver: public media::VideoCaptureDevice::EventHandler {
  public:
   virtual void OnError() {}
   void OnFrameInfo(const media::VideoCaptureDevice::Capability& info) {}
   virtual void OnIncomingCapturedFrame(const uint8* data, int length,
                                        base::Time timestamp) {}
+  virtual void OnDeviceState(bool in_use) {}
 };
 
 // Test class
 class VideoCaptureManagerTest : public testing::Test {
  public:
   VideoCaptureManagerTest()
       : vcm_(),
         listener_(),
         message_loop_(),
         io_thread_(),
@@ skipping 221 matching lines @@
   vcm_->Open(*it);
 
   // Wait to check callbacks before removing the listener
   SyncWithVideoCaptureManagerThread();
 
   // Delete the manager.
   vcm_.reset();
 }
 
 }  // namespace