Simplify SharedWorkerRepository code (Chromium side)

content/renderer/websharedworkerrepository_impl.cc

-// Copyright 2009 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/renderer/websharedworkerrepository_impl.h"
-
-#include "content/child/child_thread.h"
-#include "content/common/view_messages.h"
-#include "content/renderer/websharedworker_proxy.h"
-
-namespace content {
-
-WebSharedWorkerRepositoryImpl::WebSharedWorkerRepositoryImpl() {}
-
-WebSharedWorkerRepositoryImpl::~WebSharedWorkerRepositoryImpl() {}
-
-void WebSharedWorkerRepositoryImpl::addSharedWorker(
-    WebKit::WebSharedWorker* worker, DocumentID document) {
-  shared_worker_parents_.insert(document);
-}
-
-void WebSharedWorkerRepositoryImpl::documentDetached(DocumentID document) {
-  DocumentSet::iterator iter = shared_worker_parents_.find(document);
-  if (iter != shared_worker_parents_.end()) {
-    // Notify the browser process that the document has shut down.
-    ChildThread::current()->Send(new ViewHostMsg_DocumentDetached(document));
-    shared_worker_parents_.erase(iter);
-  }
-}
-
-bool WebSharedWorkerRepositoryImpl::hasSharedWorkers(DocumentID document) {
-  return shared_worker_parents_.find(document) != shared_worker_parents_.end();
-}
-
-}  // namespace content