Add support for exporting IPC messages from component DLLs.

content/browser/renderer_host/p2p/socket_host_test_utils.h

Index: content/browser/renderer_host/p2p/socket_host_test_utils.h
===================================================================
--- content/browser/renderer_host/p2p/socket_host_test_utils.h	(revision 98434)
+++ content/browser/renderer_host/p2p/socket_host_test_utils.h	(working copy)
@@ -264,7 +264,7 @@
   if (arg->type() != P2PMsg_OnDataReceived::ID)
     return false;
   P2PMsg_OnDataReceived::Param params;
-  IPC::MessageWithTuple<P2PMsg_OnDataReceived::Param>::Read(arg, &params);
+  P2PMsg_OnDataReceived::Read(arg, &params);
   return params.c == packet_content;
 }
 
@@ -272,7 +272,7 @@
   if (arg->type() != P2PMsg_OnIncomingTcpConnection::ID)
     return false;
   P2PMsg_OnIncomingTcpConnection::Param params;
-  IPC::MessageWithTuple<P2PMsg_OnIncomingTcpConnection::Param>::Read(
+  P2PMsg_OnIncomingTcpConnection::Read(
       arg, &params);
   return params.b == address;
 }