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

content/browser/devtools/forwarding_agent_host.cc

 // 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.
 
 #include "content/browser/devtools/forwarding_agent_host.h"
 
 #include "content/browser/devtools/devtools_manager_impl.h"
 
 namespace content {
 
 ForwardingAgentHost::ForwardingAgentHost(
     DevToolsExternalAgentProxyDelegate* delegate)
       : delegate_(delegate) {
 }
 
 ForwardingAgentHost::~ForwardingAgentHost() {
 }
 
 void ForwardingAgentHost::DispatchOnClientHost(const std::string& message) {
-  DevToolsManagerImpl::GetInstance()->DispatchOnInspectorFrontend(
-      this, message);
+  SendMessageToClient(message);
 }
 
 void ForwardingAgentHost::ConnectionClosed() {
-  NotifyCloseListener();
+  HostClosed();
 }
 
 void ForwardingAgentHost::Attach() {
   delegate_->Attach(this);
 }
 
 void ForwardingAgentHost::Detach() {
   delegate_->Detach();
 }
 
 void ForwardingAgentHost::DispatchOnInspectorBackend(
     const std::string& message) {
   delegate_->SendMessageToBackend(message);
 }
 
 }  // content