Require explicit selection of traits for LazyInstance

content/utility/in_process_utility_thread.cc

Index: content/utility/in_process_utility_thread.cc
diff --git a/content/utility/in_process_utility_thread.cc b/content/utility/in_process_utility_thread.cc
index 8417c5991ce2ea33801130c222f847ffeab028bf..0a390458c3b0c64673ff878906e9e7ce01b224d3 100644
--- a/content/utility/in_process_utility_thread.cc
+++ b/content/utility/in_process_utility_thread.cc
@@ -15,7 +15,8 @@ namespace content {
 
 // We want to ensure there's only one utility thread running at a time, as there
 // are many globals used in the utility process.
-static base::LazyInstance<base::Lock> g_one_utility_thread_lock;
+static base::LazyInstance<base::Lock>::DestructorAtExit
+    g_one_utility_thread_lock;
 
 InProcessUtilityThread::InProcessUtilityThread(
     const InProcessChildThreadParams& params)