Extensions: Split extensions utility IPC messages into its own file.

chrome/browser/extensions/chrome_extensions_browser_client.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 "chrome/browser/extensions/chrome_extensions_browser_client.h"
 
 #include "base/command_line.h"
 #include "base/path_service.h"
 #include "base/version.h"
 #include "chrome/browser/app_mode/app_mode_utils.h"
@@ skipping 262 matching lines @@
 ComponentExtensionResourceManager*
 ChromeExtensionsBrowserClient::GetComponentExtensionResourceManager() {
   if (!resource_manager_)
     resource_manager_.reset(new ChromeComponentExtensionResourceManager());
   return resource_manager_.get();
 }
 
 scoped_ptr<extensions::RuntimeAPIDelegate>
 ChromeExtensionsBrowserClient::CreateRuntimeAPIDelegate(
     content::BrowserContext* context) const {
+#if defined(ENABLE_EXTENSIONS)
   return scoped_ptr<extensions::RuntimeAPIDelegate>(
       new ChromeRuntimeAPIDelegate(context));
+#else
+  return scoped_ptr<extensions::RuntimeAPIDelegate>();
+#endif
 }
 
 }  // namespace extensions