Require explicit selection of traits for LazyInstance

content/browser/browser_child_process_host_impl.cc

Index: content/browser/browser_child_process_host_impl.cc
diff --git a/content/browser/browser_child_process_host_impl.cc b/content/browser/browser_child_process_host_impl.cc
index 71bf559f2bb1046827eb7418417cf8a7afcc9ecc..f2260270a36229fc6956a5976354be741b5f16cb 100644
--- a/content/browser/browser_child_process_host_impl.cc
+++ b/content/browser/browser_child_process_host_impl.cc
@@ -58,11 +58,12 @@
 namespace content {
 namespace {
 
-static base::LazyInstance<BrowserChildProcessHostImpl::BrowserChildProcessList>
+static base::LazyInstance<
+    BrowserChildProcessHostImpl::BrowserChildProcessList>::DestructorAtExit
     g_child_process_list = LAZY_INSTANCE_INITIALIZER;
 
-base::LazyInstance<base::ObserverList<BrowserChildProcessObserver>>
-    g_observers = LAZY_INSTANCE_INITIALIZER;
+base::LazyInstance<base::ObserverList<BrowserChildProcessObserver>>::
+    DestructorAtExit g_observers = LAZY_INSTANCE_INITIALIZER;
 
 void NotifyProcessLaunchedAndConnected(const ChildProcessData& data) {
   for (auto& observer : g_observers.Get())