Introduces DevToolsManagerDelegate.

content/browser/devtools/devtools_agent_host_impl.cc

 // 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.
 
 #include "content/browser/devtools/devtools_agent_host_impl.h"
 
 #include <map>
 
 #include "base/basictypes.h"
 #include "base/guid.h"
@@ skipping 42 matching lines @@
 }
 
 RenderViewHost* DevToolsAgentHostImpl::GetRenderViewHost() {
   return NULL;
 }
 
 void DevToolsAgentHostImpl::DisconnectRenderViewHost() {}
 
 void DevToolsAgentHostImpl::ConnectRenderViewHost(RenderViewHost* rvh) {}
 
+bool DevToolsAgentHostImpl::IsWorker() {
+  return false;
+}
+
 void DevToolsAgentHostImpl::NotifyCloseListener() {
   if (close_listener_) {
     scoped_refptr<DevToolsAgentHostImpl> protect(this);
     close_listener_->AgentHostClosing(this);
     close_listener_ = NULL;
   }
 }
 
 }  // namespace content