Linux: initialize the sandbox in the utility process.

content/utility/utility_main.cc

Index: content/utility/utility_main.cc
diff --git a/content/utility/utility_main.cc b/content/utility/utility_main.cc
index 711b7bce81242e48c59c0f2d7d84dd849c732a47..6aeff1daf74581d31ccfaeacac84db8c1a28340f 100644
--- a/content/utility/utility_main.cc
+++ b/content/utility/utility_main.cc
@@ -10,6 +10,7 @@
 #include "content/common/child_process.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/main_function_params.h"
+#include "content/public/common/sandbox_init.h"
 #include "content/utility/utility_thread_impl.h"
 
 #if defined(OS_WIN)
@@ -25,6 +26,11 @@ int UtilityMain(const content::MainFunctionParams& parameters) {
   base::SystemMonitor system_monitor;
   HighResolutionTimerManager hi_res_timer_manager;
 
+#if defined(OS_LINUX)
+  // Initialize the sandbox before any thread is created.
+  content::InitializeSandbox();
+#endif
+
   ChildProcess utility_process;
   utility_process.set_main_thread(new UtilityThreadImpl());