Require explicit selection of traits for LazyInstance

chrome/browser/ui/startup/startup_browser_creator.cc

Index: chrome/browser/ui/startup/startup_browser_creator.cc
diff --git a/chrome/browser/ui/startup/startup_browser_creator.cc b/chrome/browser/ui/startup/startup_browser_creator.cc
index 10b6bbcfb96ca426cc1426ef6ec91ac67d3a25c4..0efc97a349d8a42b2d2ff9de13beeb57e6da40d6 100644
--- a/chrome/browser/ui/startup/startup_browser_creator.cc
+++ b/chrome/browser/ui/startup/startup_browser_creator.cc
@@ -248,8 +248,8 @@ class ProfileLaunchObserver : public content::NotificationObserver {
   DISALLOW_COPY_AND_ASSIGN(ProfileLaunchObserver);
 };
 
-base::LazyInstance<ProfileLaunchObserver> profile_launch_observer =
-    LAZY_INSTANCE_INITIALIZER;
+base::LazyInstance<ProfileLaunchObserver>::DestructorAtExit
+    profile_launch_observer = LAZY_INSTANCE_INITIALIZER;
 
 // Dumps the current set of the browser process's histograms to |output_file|.
 // The file is overwritten if it exists. This function should only be called in