Move P2P code to content namespace.

content/browser/renderer_host/p2p/socket_host_tcp.cc

Index: content/browser/renderer_host/p2p/socket_host_tcp.cc
diff --git a/content/browser/renderer_host/p2p/socket_host_tcp.cc b/content/browser/renderer_host/p2p/socket_host_tcp.cc
index 2c09a2eebc8f4c096d00639beb2a0304cf4a0e98..230a71ff6b56bf8c5d249341df724cea688c9955 100644
--- a/content/browser/renderer_host/p2p/socket_host_tcp.cc
+++ b/content/browser/renderer_host/p2p/socket_host_tcp.cc
@@ -12,12 +12,12 @@
 #include "net/socket/tcp_client_socket.h"
 
 namespace {
-
 const int kReadBufferSize = 4096;
 const int kPacketHeaderSize = sizeof(uint16);
-
 }  // namespace
 
+namespace content {
+
 P2PSocketHostTcp::P2PSocketHostTcp(IPC::Message::Sender* message_sender,
                                    int routing_id, int id)
     : P2PSocketHost(message_sender, routing_id, id),
@@ -271,3 +271,5 @@ P2PSocketHost* P2PSocketHostTcp::AcceptIncomingTcpConnection(
   OnError();
   return NULL;
 }
+
+} // namespace content