[DevTools] Rename DevToolsManagerImpl to DevToolsManager.

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() {
 }
 
@@ skipping 32 matching lines @@
 
 bool ForwardingAgentHost::Activate() {
   return false;
 }
 
 bool ForwardingAgentHost::Close() {
   return false;
 }
 
 }  // content