Move a bunch of code in content\renderer to the content namespace.

content/renderer/media/media_stream_impl.h

Index: content/renderer/media/media_stream_impl.h
===================================================================
--- content/renderer/media/media_stream_impl.h	(revision 163007)
+++ content/renderer/media/media_stream_impl.h	(working copy)
@@ -26,10 +26,12 @@
 class WebMediaStreamDescriptor;
 }
 
-class MediaStreamDispatcher;
 class MediaStreamDependencyFactory;
 class VideoCaptureImplManager;
 
+namespace content {
+class MediaStreamDispatcher;
+
 // MediaStreamImpl is a delegate for the Media Stream API messages used by
 // WebKit. It ties together WebKit, native PeerConnection in libjingle and
 // MediaStreamManager (via MediaStreamDispatcher and MediaStreamDispatcherHost)
@@ -37,7 +39,7 @@
 // render thread.
 // MediaStreamImpl have weak pointers to a MediaStreamDispatcher.
 class CONTENT_EXPORT MediaStreamImpl
-    : public content::RenderViewObserver,
+    : public RenderViewObserver,
       NON_EXPORTED_BASE(public WebKit::WebUserMediaClient),
       NON_EXPORTED_BASE(public webkit_media::MediaStreamClient),
       public MediaStreamDispatcherEventHandler,
@@ -45,7 +47,7 @@
       NON_EXPORTED_BASE(public base::NonThreadSafe) {
  public:
   MediaStreamImpl(
-      content::RenderView* render_view,
+      RenderView* render_view,
       MediaStreamDispatcher* media_stream_dispatcher,
       VideoCaptureImplManager* vc_manager,
       MediaStreamDependencyFactory* dependency_factory);
@@ -93,7 +95,7 @@
       const media_stream::StreamDeviceInfo& device_info) OVERRIDE;
   virtual void OnDeviceOpenFailed(int request_id) OVERRIDE;
 
-  // content::RenderViewObserver OVERRIDE
+  // RenderViewObserver OVERRIDE
   virtual void FrameWillClose(WebKit::WebFrame* frame) OVERRIDE;
 
  protected:
@@ -161,4 +163,6 @@
   DISALLOW_COPY_AND_ASSIGN(MediaStreamImpl);
 };
 
+}  // namespace content
+
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_IMPL_H_