Require explicit selection of traits for LazyInstance

chrome/browser/extensions/api/sessions/sessions_api.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/api/sessions/sessions_api.h"
 
 #include <stddef.h>
 
 #include <utility>
 #include <vector>
@@ skipping 578 matching lines @@
       api::sessions::OnChanged::kEventName);
 }
 
 SessionsAPI::~SessionsAPI() {
 }
 
 void SessionsAPI::Shutdown() {
   EventRouter::Get(browser_context_)->UnregisterObserver(this);
 }
 
-static base::LazyInstance<BrowserContextKeyedAPIFactory<SessionsAPI> >
-    g_factory = LAZY_INSTANCE_INITIALIZER;
+static base::LazyInstance<
+    BrowserContextKeyedAPIFactory<SessionsAPI>>::DestructorAtExit g_factory =
+    LAZY_INSTANCE_INITIALIZER;
 
 BrowserContextKeyedAPIFactory<SessionsAPI>*
 SessionsAPI::GetFactoryInstance() {
   return g_factory.Pointer();
 }
 
 void SessionsAPI::OnListenerAdded(const EventListenerInfo& details) {
   sessions_event_router_.reset(
       new SessionsEventRouter(Profile::FromBrowserContext(browser_context_)));
   EventRouter::Get(browser_context_)->UnregisterObserver(this);
 }
 
 }  // namespace extensions