Add PDF compositor service

chrome/utility/chrome_content_utility_client.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_UTILITY_CHROME_CONTENT_UTILITY_CLIENT_H_
 #define CHROME_UTILITY_CHROME_CONTENT_UTILITY_CLIENT_H_
 
 #include <memory>
 #include <vector>
 
 #include "base/macros.h"
 #include "content/public/utility/content_utility_client.h"
 
 class UtilityMessageHandler;
 
 class ChromeContentUtilityClient : public content::ContentUtilityClient {
  public:
   ChromeContentUtilityClient();
   ~ChromeContentUtilityClient() override;
 
   // content::ContentUtilityClient:
   void UtilityThreadStarted() override;
   bool OnMessageReceived(const IPC::Message& message) override;
+  void RegisterServices(StaticServiceMap* services) override;
 
   static void PreSandboxStartup();
 
  private:
   // IPC message handlers.
   using Handlers = std::vector<std::unique_ptr<UtilityMessageHandler>>;
   Handlers handlers_;
 
   // True if the utility process runs with elevated privileges.
   bool utility_process_running_elevated_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentUtilityClient);
 };
 
 #endif  // CHROME_UTILITY_CHROME_CONTENT_UTILITY_CLIENT_H_