Remove EnableZygote API.

content/browser/utility_process_host_impl.h

Index: content/browser/utility_process_host_impl.h
diff --git a/content/browser/utility_process_host_impl.h b/content/browser/utility_process_host_impl.h
index 039e20f8c509c7487985535af442eada990adc05..3083b22941069f375b6074aaa55b571c5965bd1a 100644
--- a/content/browser/utility_process_host_impl.h
+++ b/content/browser/utility_process_host_impl.h
@@ -40,7 +40,6 @@ class CONTENT_EXPORT UtilityProcessHostImpl
   virtual void SetExposedDir(const base::FilePath& dir) OVERRIDE;
   virtual void EnableMDns() OVERRIDE;
   virtual void DisableSandbox() OVERRIDE;
-  virtual void EnableZygote() OVERRIDE;
   virtual const ChildProcessData& GetData() OVERRIDE;
 #if defined(OS_POSIX)
   virtual void SetEnv(const base::EnvironmentMap& env) OVERRIDE;
@@ -66,7 +65,8 @@ class CONTENT_EXPORT UtilityProcessHostImpl
 
   base::FilePath exposed_dir_;
 
-  // Whether utility process needs perform presandbox initialization for MDns.
+  // Whether the utility process needs to perform presandbox initialization
+  // for mDNS.
   bool is_mdns_enabled_;
 
   // Whether to pass switches::kNoSandbox to the child.
@@ -75,9 +75,6 @@ class CONTENT_EXPORT UtilityProcessHostImpl
   // Flags defined in ChildProcessHost with which to start the process.
   int child_flags_;
 
-  // Launch the utility process from the zygote. Defaults to false.
-  bool use_linux_zygote_;
-
   base::EnvironmentMap env_;
 
   bool started_;