Remove WebServiceWorkerContextClient::WorkerScriptLoadedOnInitiatorThread()

This method was used legacy on-the-main-thread script fetch which was
removed a while ago. Remove this leftover.

Bug: 967272
Change-Id: Ia57e7ec143bf08a245bc9ae83ac5522604344081
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1771101Reviewed-by: Hiroki Nakagawa <nhiroki@chromium.org>
Commit-Queue: Kenichi Ishibashi <bashi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#690272}

content/renderer/service_worker/service_worker_context_client.cc

@@ -233,13 +233,6 @@ void ServiceWorkerContextClient::FailedToFetchModuleScript() {
   // eventually destroys |this|.
 }
 
-void ServiceWorkerContextClient::WorkerScriptLoadedOnInitiatorThread() {
-  DCHECK(initiator_thread_task_runner_->RunsTasksInCurrentSequence());
-  DCHECK(!is_starting_installed_worker_);
-  instance_host_->OnScriptLoaded();
-  TRACE_EVENT_NESTABLE_ASYNC_END0("ServiceWorker", "LOAD_SCRIPT", this);
-}
-
 void ServiceWorkerContextClient::WorkerScriptLoadedOnWorkerThread() {
   DCHECK(worker_task_runner_->RunsTasksInCurrentSequence());
   instance_host_->OnScriptLoaded();

content/renderer/service_worker/service_worker_context_client.h

@@ -124,7 +124,6 @@ class CONTENT_EXPORT ServiceWorkerContextClient
   void WorkerContextFailedToStartOnInitiatorThread() override;
   void FailedToLoadClassicScript() override;
   void FailedToFetchModuleScript() override;
-  void WorkerScriptLoadedOnInitiatorThread() override;
   void WorkerScriptLoadedOnWorkerThread() override;
   void WorkerContextStarted(
       blink::WebServiceWorkerContextProxy* proxy,

third_party/blink/public/web/modules/service_worker/web_service_worker_context_client.h

@@ -95,13 +95,6 @@ class WebServiceWorkerContextClient {
   // failed.
   virtual void FailedToFetchModuleScript() {}
 
-  // The worker script was successfully loaded by ResourceLoader. Called on the
-  // initiator thread.
-  //
-  // This is called before WorkerContextStarted(). Script evaluation does not
-  // start until WillEvaluateScript().
-  virtual void WorkerScriptLoadedOnInitiatorThread() {}
-
   // The worker script was successfully loaded on the worker thread.
   // When off-the-main-thread script fetch is on, this is called for both
   // new-script and installed-script cases. If off-the-main-thread script fetch

third_party/blink/renderer/modules/service_worker/web_embedded_worker_impl_test.cc

@@ -128,7 +128,6 @@ class MockServiceWorkerContextClient final
                void(mojo::ScopedMessagePipeHandle,
                     mojo::ScopedMessagePipeHandle));
   MOCK_METHOD0(WorkerContextFailedToStartOnInitiatorThread, void());
-  MOCK_METHOD0(WorkerScriptLoadedOnInitiatorThread, void());
 
   void WorkerContextStarted(WebServiceWorkerContextProxy* proxy,
                             scoped_refptr<base::SequencedTaskRunner>) override {