Adding a skeleton MediaStreamCenter.

content/renderer/media/media_stream_center.h

Index: content/renderer/media/media_stream_center.h
diff --git a/content/renderer/media/media_stream_center.h b/content/renderer/media/media_stream_center.h
new file mode 100644
index 0000000000000000000000000000000000000000..11c1fc4aaf0d2a45431594bdcfbd66b5761a71cf
--- /dev/null
+++ b/content/renderer/media/media_stream_center.h
@@ -0,0 +1,50 @@
+// 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 CONTENT_RENDERER_MEDIA_MEDIA_STREAM_CENTER_H_
+#define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_CENTER_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "content/common/content_export.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebMediaStreamCenter.h"
+
+namespace WebKit {
+class WebMediaStreamCenterClient;
+}
+
+namespace content {
+
+class CONTENT_EXPORT MediaStreamCenter
+    : NON_EXPORTED_BASE(public WebKit::WebMediaStreamCenter) {
+ public:
+  explicit MediaStreamCenter(WebKit::WebMediaStreamCenterClient* client);
+
+  virtual void queryMediaStreamSources(
+      const WebKit::WebMediaStreamSourcesRequest& request) OVERRIDE;
+
+  virtual void didEnableMediaStreamTrack(
+      const WebKit::WebMediaStreamDescriptor& stream,
+      const WebKit::WebMediaStreamComponent& component) OVERRIDE;
+
+  virtual void didDisableMediaStreamTrack(
+      const WebKit::WebMediaStreamDescriptor& stream,
+      const WebKit::WebMediaStreamComponent& component) OVERRIDE;
+
+  virtual void didStopLocalMediaStream(
+      const WebKit::WebMediaStreamDescriptor& stream) OVERRIDE;
+
+  virtual void didConstructMediaStream(
+      const WebKit::WebMediaStreamDescriptor& stream) OVERRIDE;
+
+ private:
+  // Weak pointer, owned by WebKit.
+  WebKit::WebMediaStreamCenterClient* client_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaStreamCenter);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_CENTER_H_