Move a bunch of code in content\common (as well as a few left in renderer) to the content namespace.

content/common/socket_stream_dispatcher.cc

Index: content/common/socket_stream_dispatcher.cc
===================================================================
--- content/common/socket_stream_dispatcher.cc	(revision 163290)
+++ content/common/socket_stream_dispatcher.cc	(working copy)
@@ -19,6 +19,8 @@
 #include "webkit/glue/websocketstreamhandle_bridge.h"
 #include "webkit/glue/websocketstreamhandle_delegate.h"
 
+namespace content {
+
 // IPCWebSocketStreamHandleBridge is owned by each SocketStreamHandle.
 // It communicates with the main browser process via SocketStreamDispatcher.
 class IPCWebSocketStreamHandleBridge
@@ -231,3 +233,5 @@
   else
     DLOG(ERROR) << "No SocketStreamHandleBridge for socket_id=" << socket_id;
 }
+
+}  // namespace content