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

content/browser/devtools/worker_devtools_message_filter.h

-// Copyright (c) 2012 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_DEVTOOLS_WORKER_DEVTOOLS_MESSAGE_FILTER_H_
-#define CONTENT_BROWSER_DEVTOOLS_WORKER_DEVTOOLS_MESSAGE_FILTER_H_
-
-#include "base/callback_forward.h"
-#include "content/public/browser/browser_message_filter.h"
-
-namespace content {
-
-class WorkerDevToolsMessageFilter : public BrowserMessageFilter {
- public:
-  explicit WorkerDevToolsMessageFilter(int worker_process_host_id);
-
- private:
-  virtual ~WorkerDevToolsMessageFilter();
-
-  // BrowserMessageFilter implementation.
-  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
-  // Message handlers.
-  void OnDispatchOnInspectorFrontend(const std::string& message);
-  void OnSaveAgentRumtimeState(const std::string& state);
-
-  int worker_process_host_id_;
-  int current_routing_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(WorkerDevToolsMessageFilter);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_DEVTOOLS_WORKER_DEVTOOLS_MESSAGE_FILTER_H_