Revert 113027 - Zygote most of the uses of the utility process on Linux

content/browser/utility_process_host.cc

Index: content/browser/utility_process_host.cc
===================================================================
--- content/browser/utility_process_host.cc	(revision 113164)
+++ content/browser/utility_process_host.cc	(working copy)
@@ -43,10 +43,8 @@
       no_sandbox_(false),
 #if defined(OS_LINUX)
       child_flags_(ChildProcessHost::CHILD_ALLOW_SELF),
-      use_linux_zygote_(true),
 #else
       child_flags_(ChildProcessHost::CHILD_NORMAL),
-      use_linux_zygote_(false),
 #endif
       started_(false) {
 }
@@ -117,7 +115,8 @@
     cmd_line->AppendSwitch(switches::kDebugPluginLoading);
 
 #if defined(OS_POSIX)
-  // TODO(port): Sandbox extension unpacking on Linux.
+  // TODO(port): Sandbox this on Linux.  Also, zygote this to work with
+  // Linux updating.
   bool has_cmd_prefix = browser_command_line.HasSwitch(
       switches::kUtilityCmdPrefix);
   if (has_cmd_prefix) {
@@ -130,17 +129,11 @@
   cmd_line->AppendSwitchPath(switches::kUtilityProcessAllowedDir, exposed_dir_);
 #endif
 
-  bool use_zygote = false;
-
-#if defined(OS_LINUX)
-  use_zygote = !no_sandbox_ && use_linux_zygote_;
-#endif
-
   Launch(
 #if defined(OS_WIN)
       exposed_dir_,
 #elif defined(OS_POSIX)
-      use_zygote,
+      false,
       env_,
 #endif
       cmd_line);