Add PPAPI_BEGIN_MESSAGE_MAP and PPAPI_END_MESSAGE_MAP to be used when dispatching IPCs using PPAPI_…

ppapi/proxy/ppb_core_proxy.cc

Index: ppapi/proxy/ppb_core_proxy.cc
===================================================================
--- ppapi/proxy/ppb_core_proxy.cc	(revision 270145)
+++ ppapi/proxy/ppb_core_proxy.cc	(working copy)
@@ -103,18 +103,20 @@
 }
 
 bool PPB_Core_Proxy::OnMessageReceived(const IPC::Message& msg) {
+#if defined(OS_NACL)
+  return false;
+#else
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PPB_Core_Proxy, msg)
-#if !defined(OS_NACL)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBCore_AddRefResource,
                         OnMsgAddRefResource)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBCore_ReleaseResource,
                         OnMsgReleaseResource)
-#endif
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   // TODO(brettw) handle bad messages!
   return handled;
+#endif
 }
 
 #if !defined(OS_NACL)