Clean up deprecated Web Push API code-paths.

content/renderer/push_messaging_dispatcher.cc

Index: content/renderer/push_messaging_dispatcher.cc
diff --git a/content/renderer/push_messaging_dispatcher.cc b/content/renderer/push_messaging_dispatcher.cc
index e699a309f9ad3d8ccaad48bf33c5742916babe83..7c9d05a662792e30aa9ac008ac1e50b925b100b6 100644
--- a/content/renderer/push_messaging_dispatcher.cc
+++ b/content/renderer/push_messaging_dispatcher.cc
@@ -38,13 +38,6 @@ bool PushMessagingDispatcher::OnMessageReceived(const IPC::Message& message) {
 }
 
 void PushMessagingDispatcher::registerPushMessaging(
-    const WebString& sender_id,
-    blink::WebPushRegistrationCallbacks* callbacks,
-    blink::WebServiceWorkerProvider* service_worker_provider) {
-  registerPushMessaging(callbacks, service_worker_provider);
-}
-
-void PushMessagingDispatcher::registerPushMessaging(
     blink::WebPushRegistrationCallbacks* callbacks,
     blink::WebServiceWorkerProvider* service_worker_provider) {
   RenderFrameImpl::FromRoutingID(routing_id())->manifest_manager()->GetManifest(