Worker: Enable UseCounter for SharedWorkerGlobalScope

content/browser/shared_worker/shared_worker_host.h

 // 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.
 
 #ifndef CONTENT_BROWSER_SHARED_WORKER_SHARED_WORKER_HOST_H_
 #define CONTENT_BROWSER_SHARED_WORKER_SHARED_WORKER_HOST_H_
 
 #include <list>
 #include <memory>
+#include <set>
 #include <utility>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "content/browser/shared_worker/worker_document_set.h"
 
 class GURL;
@@ skipping 35 matching lines @@
   // Shuts down any shared workers that are no longer referenced by active
   // documents.
   void DocumentDetached(SharedWorkerMessageFilter* filter,
                         unsigned long long document_id);
 
   // Removes the references to shared workers from the all documents in the
   // renderer frame. And shuts down any shared workers that are no longer
   // referenced by active documents.
   void RenderFrameDetached(int render_process_id, int render_frame_id);
 
+  void CountFeature(uint32_t use_counter_id);
   void WorkerContextClosed();
+  void WorkerContextDestroyed();
   void WorkerReadyForInspection();
   void WorkerScriptLoaded();
   void WorkerScriptLoadFailed();
   void WorkerConnected(int message_port_id);
-  void WorkerContextDestroyed();
   void AllowFileSystem(const GURL& url,
                        std::unique_ptr<IPC::Message> reply_msg);
   void AllowIndexedDB(const GURL& url,
                       const base::string16& name,
                       bool* result);
 
   // Terminates the given worker, i.e. based on a UI action.
   void TerminateWorker();
 
   void AddFilter(SharedWorkerMessageFilter* filter, int route_id);
@@ skipping 53 matching lines @@
   // valid because this host is destructed immediately after the filter is
   // closed (see SharedWorkerServiceImpl::OnSharedWorkerMessageFilterClosing).
   SharedWorkerMessageFilter* worker_render_filter_;
 
   const int worker_process_id_;
   const int worker_route_id_;
   bool termination_message_sent_ = false;
   bool closed_ = false;
   const base::TimeTicks creation_time_;
 
+  std::set<uint32_t> use_counter_;

[dcheng, 2017/02/03 18:27:50]

Nit: add a comment on this and note that this is the set of features that the
shared worker has used.

[nhiroki, 2017/02/06 00:35:56]

Done.

+
   base::WeakPtrFactory<SharedWorkerHost> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SharedWorkerHost);
 };
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SHARED_WORKER_SHARED_WORKER_HOST_H_