DevTools: Never instantiate DevToolsAgentHost on threads other than UI

content/browser/devtools/devtools_http_handler_impl.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_BROWSER_DEVTOOLS_DEVTOOLS_HTTP_HANDLER_IMPL_H_
 #define CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_HTTP_HANDLER_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 62 matching lines @@
   void OnDiscoveryPageRequestUI(int connection_id);
 
   void OnWebSocketRequestUI(int connection_id,
                             const net::HttpServerRequestInfo& info);
   void OnWebSocketMessageUI(int connection_id, const std::string& data);
   void OnCloseUI(int connection_id);
 
   void ResetHandlerThread();
   void ResetHandlerThreadAndRelease();
 
-  void CollectWorkerInfo(base::ListValue* target_list, std::string host);
-  void SendTargetList(int connection_id, base::ListValue* target_list);
+  typedef std::vector<WorkerService::WorkerInfo> WorkerInfoList;
+
+  WorkerInfoList CollectWorkerInfo();
+  void SendTargetList(int connection_id,
+                      const std::string& host,
+                      base::ListValue* target_list,
+                      const WorkerInfoList& worker_info_list);
 
   void Init();
   void Teardown();
 
   void StartHandlerThread();
   void StopHandlerThread();
 
   void SendJson(int connection_id,
                 net::HttpStatusCode status_code,
                 base::Value* value,
@@ skipping 33 matching lines @@
   scoped_ptr<DevToolsHttpHandlerDelegate> delegate_;
   DevToolsAgentHostBinding* binding_;
   scoped_ptr<DevToolsAgentHostBinding> default_binding_;
   scoped_refptr<DevToolsBrowserTarget> browser_target_;
   DISALLOW_COPY_AND_ASSIGN(DevToolsHttpHandlerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_HTTP_HANDLER_IMPL_H_