Revert of Have each SandboxedProcessLauncherDelegate maintain a zygote.

content/browser/utility_process_host_impl.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 CONTENT_BROWSER_UTILITY_PROCESS_HOST_IMPL_H_
 #define CONTENT_BROWSER_UTILITY_PROCESS_HOST_IMPL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 45 matching lines @@
   const ChildProcessData& GetData() override;
 #if defined(OS_POSIX)
   void SetEnv(const base::EnvironmentMap& env) override;
 #endif
   bool StartMojoMode() override;
   ServiceRegistry* GetServiceRegistry() override;
   void SetName(const base::string16& name) override;
 
   void set_child_flags(int flags) { child_flags_ = flags; }
 
-#if defined(OS_POSIX) && !defined(OS_ANDROID) && !defined(OS_MACOSX)
-  // Launch the zygote early in the browser startup.
-  static void EarlyZygoteLaunch();
-#endif  // defined(OS_POSIX) && !defined(OS_ANDROID) && !defined(OS_MACOSX)
-
  private:
   // Starts a process if necessary.  Returns true if it succeeded or a process
   // has already been started via StartBatchMode().
   bool StartProcess();
 
   // BrowserChildProcessHost:
   bool OnMessageReceived(const IPC::Message& message) override;
   void OnProcessLaunchFailed() override;
   void OnProcessCrashed(int exit_code) override;
   void OnProcessLaunched() override;
@@ skipping 35 matching lines @@
 
   // Used to vend weak pointers, and should always be declared last.
   base::WeakPtrFactory<UtilityProcessHostImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(UtilityProcessHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_UTILITY_PROCESS_HOST_IMPL_H_