C++ bindings: separate out serialization source set, have "mojom" targets optionally use serializat…

mojo/public/cpp/bindings/lib/message_header_validator.cc

 // 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.
 
 #include "mojo/public/cpp/bindings/lib/message_header_validator.h"
 
 #include "mojo/public/cpp/bindings/lib/bounds_checker.h"
+#include "mojo/public/cpp/bindings/lib/message_validation.h"
 #include "mojo/public/cpp/bindings/lib/validation_errors.h"
 #include "mojo/public/cpp/bindings/lib/validation_util.h"
 #include "mojo/public/interfaces/bindings/interface_control_messages.mojom.h"
 
 namespace mojo {
 namespace internal {
 namespace {
 
 bool IsValidMessageHeader(const MessageHeader* header) {
   // NOTE: Our goal is to preserve support for future extension of the message
@@ skipping 73 matching lines @@
     return false;
   switch (message->header()->name) {
     case kRunMessageId:
       return ValidateMessagePayload<RunResponseMessageParams_Data>(message);
   }
   return false;
 }
 
 }  // namespace internal
 }  // namespace mojo