Clean up deprecated Web Push API code-paths.

content/shell/renderer/test_runner/mock_web_push_client.cc

Index: content/shell/renderer/test_runner/mock_web_push_client.cc
diff --git a/content/shell/renderer/test_runner/mock_web_push_client.cc b/content/shell/renderer/test_runner/mock_web_push_client.cc
index d2e32afbab611a17f09ccb80516ff8e20456bcd6..98bd8d20090afc18d642b3d483ffdd4953b0681d 100644
--- a/content/shell/renderer/test_runner/mock_web_push_client.cc
+++ b/content/shell/renderer/test_runner/mock_web_push_client.cc
@@ -35,13 +35,6 @@ void MockWebPushClient::SetMockErrorValues(const std::string& message) {
 }
 
 void MockWebPushClient::registerPushMessaging(
-    const WebString& sender_id,
-    blink::WebPushRegistrationCallbacks* callbacks,
-    blink::WebServiceWorkerProvider* service_worker_provider) {
-  registerPushMessaging(callbacks, service_worker_provider);
-}
-
-void MockWebPushClient::registerPushMessaging(
     blink::WebPushRegistrationCallbacks* callbacks,
     blink::WebServiceWorkerProvider* service_worker_provider) {
   DCHECK(callbacks);