Remove some Profile-keyed factory boilerplate: management omnibox preference push_messaging.

chrome/browser/extensions/api/web_navigation/web_navigation_api.cc

Index: chrome/browser/extensions/api/web_navigation/web_navigation_api.cc
diff --git a/chrome/browser/extensions/api/web_navigation/web_navigation_api.cc b/chrome/browser/extensions/api/web_navigation/web_navigation_api.cc
index 4855a0f21da36251461b6b31bbfa99c85f59e012..f6ea216147cd91cad3a69bd2d5332e7a0074925f 100644
--- a/chrome/browser/extensions/api/web_navigation/web_navigation_api.cc
+++ b/chrome/browser/extensions/api/web_navigation/web_navigation_api.cc
@@ -762,19 +762,19 @@ void WebNavigationAPI::Shutdown() {
   ExtensionSystem::Get(profile_)->event_router()->UnregisterObserver(this);
 }
 
-void WebNavigationAPI::OnListenerAdded(
-    const extensions::EventListenerInfo& details) {
-  web_navigation_event_router_.reset(new WebNavigationEventRouter(profile_));
-  ExtensionSystem::Get(profile_)->event_router()->UnregisterObserver(this);
-}
-
 static base::LazyInstance<ProfileKeyedAPIFactory<WebNavigationAPI> >
 g_factory = LAZY_INSTANCE_INITIALIZER;
 
-template <>
+// static
 ProfileKeyedAPIFactory<WebNavigationAPI>*
-ProfileKeyedAPIFactory<WebNavigationAPI>::GetInstance() {
+WebNavigationAPI::GetFactoryInstance() {
   return &g_factory.Get();
 }
 
+void WebNavigationAPI::OnListenerAdded(
+    const extensions::EventListenerInfo& details) {
+  web_navigation_event_router_.reset(new WebNavigationEventRouter(profile_));
+  ExtensionSystem::Get(profile_)->event_router()->UnregisterObserver(this);
+}
+
 }  // namespace extensions