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

content/public/browser/devtools_agent_host_client.h

-// Copyright (c) 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_AGENT_HOST_CLIENT_H_
-#define CONTENT_PUBLIC_BROWSER_DEVTOOLS_AGENT_HOST_CLIENT_H_
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "content/common/content_export.h"
-
-namespace content {
-
-class DevToolsAgentHost;
-
-// DevToolsAgentHostClient can attach to a DevToolsAgentHost and start
-// debugging it.
-class CONTENT_EXPORT DevToolsAgentHostClient {
- public:
-  virtual ~DevToolsAgentHostClient() {}
-
-  // Dispatches given protocol message on the client.
-  virtual void DispatchProtocolMessage(DevToolsAgentHost* agent_host,
-                                       const std::string& message) = 0;
-
-  // This method is called when attached agent host is closed.
-  virtual void AgentHostClosed(DevToolsAgentHost* agent_host,
-                               bool replaced_with_another_client) = 0;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_PUBLIC_BROWSER_DEVTOOLS_AGENT_HOST_CLIENT_H_