Require explicit selection of traits for LazyInstance

content/browser/web_contents/web_contents_impl.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/web_contents/web_contents_impl.h"
 
 #include <stddef.h>
 
 #include <cmath>
 #include <utility>
@@ skipping 158 matching lines @@
 namespace content {
 namespace {
 
 const int kMinimumDelayBetweenLoadingUpdatesMS = 100;
 const char kDotGoogleDotCom[] = ".google.com";
 
 #if defined(OS_ANDROID)
 const char kWebContentsAndroidKey[] = "web_contents_android";
 #endif  // OS_ANDROID
 
-base::LazyInstance<std::vector<WebContentsImpl::CreatedCallback> >
-g_created_callbacks = LAZY_INSTANCE_INITIALIZER;
+base::LazyInstance<std::vector<WebContentsImpl::CreatedCallback>>::
+    DestructorAtExit g_created_callbacks = LAZY_INSTANCE_INITIALIZER;
 
 void NotifyCacheOnIO(
     scoped_refptr<net::URLRequestContextGetter> request_context,
     const GURL& url,
     const std::string& http_method) {
   net::HttpCache* cache = request_context->GetURLRequestContext()->
       http_transaction_factory()->GetCache();
   if (cache)
     cache->OnExternalCacheHit(url, http_method);
 }
@@ skipping 5212 matching lines @@
     RenderViewHost* render_view_host = RenderViewHost::From(render_widget_host);
     if (!render_view_host)
       continue;
     render_view_host_set.insert(render_view_host);
   }
   for (RenderViewHost* render_view_host : render_view_host_set)
     render_view_host->OnWebkitPreferencesChanged();
 }
 
 }  // namespace content