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

content/public/browser/devtools_manager.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_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_