Require explicit selection of traits for LazyInstance

content/browser/renderer_host/render_widget_helper.cc

 // Copyright (c) 2012 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 "content/browser/renderer_host/render_widget_helper.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/lazy_instance.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_restrictions.h"
 #include "content/browser/dom_storage/session_storage_namespace_impl.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/common/view_messages.h"
 
 namespace content {
 namespace {
 
 typedef std::map<int, RenderWidgetHelper*> WidgetHelperMap;
-base::LazyInstance<WidgetHelperMap> g_widget_helpers =
+base::LazyInstance<WidgetHelperMap>::DestructorAtExit g_widget_helpers =
     LAZY_INSTANCE_INITIALIZER;
 
 void AddWidgetHelper(int render_process_id,
                      const scoped_refptr<RenderWidgetHelper>& widget_helper) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   // We don't care if RenderWidgetHelpers overwrite an existing process_id. Just
   // want this to be up to date.
   g_widget_helpers.Get()[render_process_id] = widget_helper.get();
 }
 
@@ skipping 155 matching lines @@
 
 void RenderWidgetHelper::OnCreateFullscreenWidgetOnUI(int32_t opener_id,
                                                       int32_t route_id) {
   RenderViewHostImpl* host = RenderViewHostImpl::FromID(
       render_process_id_, opener_id);
   if (host)
     host->CreateNewFullscreenWidget(route_id);
 }
 
 }  // namespace content