Switch to standard integer types in gin/.

gin/modules/file_module_provider.cc

 // Copyright 2013 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 "gin/modules/file_module_provider.h"
 
+#include <stddef.h>
+
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_split.h"
 #include "gin/converter.h"
 
 namespace gin {
 
 namespace {
 
@@ skipping 44 matching lines @@
     const std::string& id = *it;
     if (attempted_ids_.count(id))
       continue;
     attempted_ids_.insert(id);
     base::MessageLoop::current()->PostTask(FROM_HERE, base::Bind(
         AttempToLoadModule, runner->GetWeakPtr(), search_paths_, id));
   }
 }
 
 }  // namespace gin