DevTools: do not report worker destroyed twice.

content/browser/devtools/shared_worker_devtools_manager.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/shared_worker_devtools_manager.h"
 
 #include "content/browser/devtools/shared_worker_devtools_agent_host.h"
 #include "content/browser/shared_worker/shared_worker_instance.h"
 #include "content/public/browser/browser_thread.h"
 
@@ skipping 42 matching lines @@
   workers_[id] = agent_host;
   return agent_host->IsAttached();
 }
 
 void SharedWorkerDevToolsManager::WorkerReadyForInspection(
     int worker_process_id,
     int worker_route_id) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   const WorkerId id(worker_process_id, worker_route_id);
   AgentHostMap::iterator it = workers_.find(id);
-  if (it == workers_.end())
+  if (it == workers_.end() || it->second->IsTerminated())
     return;
   it->second->WorkerReadyForInspection();
 }
 
 void SharedWorkerDevToolsManager::WorkerDestroyed(
     int worker_process_id,
     int worker_route_id) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   const WorkerId id(worker_process_id, worker_route_id);
   AgentHostMap::iterator it = workers_.find(id);
-  if (it == workers_.end())
+  if (it == workers_.end() || it->second->IsTerminated())
     return;
   scoped_refptr<SharedWorkerDevToolsAgentHost> agent_host(it->second);
   agent_host->WorkerDestroyed();
 }
 
 void SharedWorkerDevToolsManager::RemoveInspectedWorkerData(WorkerId id) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   workers_.erase(id);
 }
 SharedWorkerDevToolsManager::SharedWorkerDevToolsManager() {
@@ skipping 12 matching lines @@
   }
   return it;
 }
 
 void SharedWorkerDevToolsManager::ResetForTesting() {
   workers_.clear();
 }
 
 
 }  // namespace content