Add support for multiple zygote fork delegates

content/public/app/content_main_delegate.cc

 // 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.
 
 #include "content/public/app/content_main_delegate.h"
 
 #include "content/public/browser/content_browser_client.h"
 
 #if !defined(OS_IOS)
 #include "content/public/plugin/content_plugin_client.h"
@@ skipping 24 matching lines @@
   return true;
 }
 
 bool ContentMainDelegate::DelaySandboxInitialization(
     const std::string& process_type) {
   return false;
 }
 
 #elif defined(OS_POSIX) && !defined(OS_ANDROID) && !defined(OS_IOS)
 
-ZygoteForkDelegate* ContentMainDelegate::ZygoteStarting() {
-  return NULL;
+void ContentMainDelegate::ZygoteStarting(
+    ScopedVector<ZygoteForkDelegate>* delegates) {
 }
 
 #endif
 
 ContentBrowserClient* ContentMainDelegate::CreateContentBrowserClient() {
 #if defined(CHROME_MULTIPLE_DLL_CHILD)
   return NULL;
 #else
   return new ContentBrowserClient();
 #endif
@@ skipping 17 matching lines @@
 
 ContentUtilityClient* ContentMainDelegate::CreateContentUtilityClient() {
 #if defined(OS_IOS) || defined(CHROME_MULTIPLE_DLL_BROWSER)
   return NULL;
 #else
   return new ContentUtilityClient();
 #endif
 }
 
 }  // namespace content