Convert utility process extension ParseUpdate IPC to mojo

extensions/common/extension_utility_messages.h

Index: extensions/common/extension_utility_messages.h
diff --git a/extensions/common/extension_utility_messages.h b/extensions/common/extension_utility_messages.h
index 5ce4033d5a4dd2aed82e9a02cbbdd39dd40b1489..62ee49c81adfed1f87e9b2bd1399d025f6a84fed 100644
--- a/extensions/common/extension_utility_messages.h
+++ b/extensions/common/extension_utility_messages.h
@@ -1,3 +1,8 @@
+#if 0
+TODO(noel): git rm this file: but the bots won't apply that if we have a
+dependent patch (and we do) that also has changes in this file.  #if def
+out here so we can apply both issues on the try bots.
+
 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
@@ -46,3 +51,4 @@ IPC_MESSAGE_CONTROL1(ExtensionUtilityHostMsg_ParseUpdateManifest_Succeeded,
 // is a description of what went wrong suitable for logging.
 IPC_MESSAGE_CONTROL1(ExtensionUtilityHostMsg_ParseUpdateManifest_Failed,
                      std::string /* error_message, if any */)
+#endif