Add support for multiple zygote fork delegates

chrome/app/chrome_main_delegate.h

 // Copyright (c) 2011 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_APP_CHROME_MAIN_DELEGATE_H_
 #define CHROME_APP_CHROME_MAIN_DELEGATE_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/stats_counters.h"
 #include "chrome/common/chrome_content_client.h"
 #include "content/public/app/content_main_delegate.h"
 
+template <typename>
+class ScopedVector;
+
 namespace base {
 class CommandLine;
 }
 
 // Chrome implementation of ContentMainDelegate.
 class ChromeMainDelegate : public content::ContentMainDelegate {
  public:
   ChromeMainDelegate();
   virtual ~ChromeMainDelegate();
 
  protected:
   // content::ContentMainDelegate implementation:
   virtual bool BasicStartupComplete(int* exit_code) OVERRIDE;
   virtual void PreSandboxStartup() OVERRIDE;
   virtual void SandboxInitialized(const std::string& process_type) OVERRIDE;
   virtual int RunProcess(
       const std::string& process_type,
       const content::MainFunctionParams& main_function_params) OVERRIDE;
   virtual void ProcessExiting(const std::string& process_type) OVERRIDE;
 #if defined(OS_MACOSX)
   virtual bool ProcessRegistersWithSystemProcess(
       const std::string& process_type) OVERRIDE;
   virtual bool ShouldSendMachPort(const std::string& process_type) OVERRIDE;
   virtual bool DelaySandboxInitialization(
       const std::string& process_type) OVERRIDE;
 #elif defined(OS_POSIX) && !defined(OS_ANDROID)
-  virtual content::ZygoteForkDelegate* ZygoteStarting() OVERRIDE;
+  virtual void ZygoteStarting(
+      ScopedVector<content::ZygoteForkDelegate>* delegates) OVERRIDE;
   virtual void ZygoteForked() OVERRIDE;
 #endif
   virtual content::ContentBrowserClient* CreateContentBrowserClient() OVERRIDE;
   virtual content::ContentPluginClient* CreateContentPluginClient() OVERRIDE;
   virtual content::ContentRendererClient*
       CreateContentRendererClient() OVERRIDE;
   virtual content::ContentUtilityClient* CreateContentUtilityClient() OVERRIDE;
 
 #if defined(OS_MACOSX)
   void InitMacCrashReporter(const base::CommandLine& command_line,
                             const std::string& process_type);
 #endif  // defined(OS_MACOSX)
 
   ChromeContentClient chrome_content_client_;
 
   // startup_timer_ will hold a reference to stats_counter_timer_. Therefore,
   // the declaration order of these variables matters. Changing this order will
   // cause startup_timer_ to be freed before stats_counter_timer_, leaving a
   // dangling reference.
   scoped_ptr<base::StatsCounterTimer> stats_counter_timer_;
   scoped_ptr<base::StatsScope<base::StatsCounterTimer> > startup_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeMainDelegate);
 };
 
 #endif  // CHROME_APP_CHROME_MAIN_DELEGATE_H_