Remove disable-embedded-shared-worker flag and shared worker process related codes.

content/browser/worker_host/worker_message_filter.h

-// Copyright (c) 2011 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.
-
-#ifndef CONTENT_BROWSER_WORKER_HOST_WORKER_MESSAGE_FILTER_H_
-#define CONTENT_BROWSER_WORKER_HOST_WORKER_MESSAGE_FILTER_H_
-
-#include "base/callback.h"
-#include "content/browser/worker_host/worker_storage_partition.h"
-#include "content/public/browser/browser_message_filter.h"
-
-class ResourceDispatcherHost;
-struct ViewHostMsg_CreateWorker_Params;
-
-namespace content {
-class MessagePortMessageFilter;
-class ResourceContext;
-
-class WorkerMessageFilter : public BrowserMessageFilter {
- public:
-  WorkerMessageFilter(int render_process_id,
-                      ResourceContext* resource_context,
-                      const WorkerStoragePartition& partition,
-                      MessagePortMessageFilter* message_port_filter);
-
-  // BrowserMessageFilter implementation.
-  virtual void OnChannelClosing() OVERRIDE;
-  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
-
-  int GetNextRoutingID();
-  int render_process_id() const { return render_process_id_; }
-
-  MessagePortMessageFilter* message_port_message_filter() const {
-    return message_port_message_filter_;
-  }
-
- private:
-  virtual ~WorkerMessageFilter();
-
-  // Message handlers.
-  void OnCreateWorker(const ViewHostMsg_CreateWorker_Params& params,
-                      int* route_id);
-  void OnForwardToWorker(const IPC::Message& message);
-  void OnDocumentDetached(unsigned long long document_id);
-
-  int render_process_id_;
-  ResourceContext* const resource_context_;
-  WorkerStoragePartition partition_;
-
-  MessagePortMessageFilter* message_port_message_filter_;
-  DISALLOW_IMPLICIT_CONSTRUCTORS(WorkerMessageFilter);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_WORKER_HOST_WORKER_MESSAGE_FILTER_H_