[DevTools] Make DevTools clients talk directly to DevToolsAgentHost instead of using DevToolsManage…

content/public/browser/devtools_manager.h

-// Copyright 2014 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_PUBLIC_BROWSER_DEVTOOLS_MANAGER_H_
-#define CONTENT_PUBLIC_BROWSER_DEVTOOLS_MANAGER_H_
-
-#include <string>
-
-#include "base/callback.h"
-#include "content/common/content_export.h"
-
-namespace IPC {
-class Message;
-}
-
-namespace content {
-
-class DevToolsAgentHost;
-class DevToolsClientHost;
-
-// DevToolsManager connects a devtools client to inspected agent and routes
-// devtools messages between the inspected instance represented by the agent
-// and devtools front-end represented by the client. If inspected agent
-// gets terminated DevToolsManager will notify corresponding client and
-// remove it from the map.
-class CONTENT_EXPORT DevToolsManager {
- public:
-  static DevToolsManager* GetInstance();
-
-  virtual ~DevToolsManager() {}
-
-  // Routes devtools message from |from| client to corresponding
-  // DevToolsAgentHost.
-  virtual bool DispatchOnInspectorBackend(DevToolsClientHost* from,
-                                          const std::string& message) = 0;
-
-  // Disconnects all client hostst.
-  virtual void CloseAllClientHosts() = 0;
-
-  // Returns agent that has |client_host| attached to it if there is one.
-  virtual DevToolsAgentHost* GetDevToolsAgentHostFor(
-      DevToolsClientHost* client_host) = 0;
-
-  // Registers new DevToolsClientHost for inspected |agent_host|. If there is
-  // another DevToolsClientHost registered for the |agent_host| at the moment
-  // it is disconnected.
-  virtual void RegisterDevToolsClientHostFor(
-      DevToolsAgentHost* agent_host,
-      DevToolsClientHost* client_host) = 0;
-
-  // This method will remove all references from the manager to the
-  // DevToolsClientHost and unregister all listeners related to the
-  // DevToolsClientHost. Called by closing client.
-  virtual void ClientHostClosing(DevToolsClientHost* client_host) = 0;
-
-  typedef base::Callback<void(DevToolsAgentHost*, bool attached)> Callback;
-
-  virtual void AddAgentStateCallback(const Callback& callback) = 0;
-  virtual void RemoveAgentStateCallback(const Callback& callback) = 0;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_PUBLIC_BROWSER_DEVTOOLS_MANAGER_H_