Separate NaCl messages from the rest of chrome messages and create a new message filter. This is part of an effort to componentize NaCl code.

BUG=244791

Review URL: https://chromiumcodereview.appspot.com/15906013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@206855 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/ipc/ipc_message_start.h b/ipc/ipc_message_start.h
index 3992307..8226bc1 100644
--- a/ipc/ipc_message_start.h
+++ b/ipc/ipc_message_start.h
@@ -83,6 +83,7 @@
   TtsMsgStart,
   MemoryBenchmarkMsgStart,
   WebSocketMsgStart,
+  NaClHostMsgStart,
   LastIPCMsgStart      // Must come last.
 };