chrome/browser/sync/glue/extensions_activity_monitor.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_SYNC_GLUE_EXTENSIONS_ACTIVITY_MONITOR_H_
   6 #define CHROME_BROWSER_SYNC_GLUE_EXTENSIONS_ACTIVITY_MONITOR_H_
   7
   8 #include "base/macros.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "content/public/browser/notification_observer.h"
  11 #include "content/public/browser/notification_registrar.h"
  12
  13 namespace syncer {
  14 class ExtensionsActivity;
  15 }
  16
  17 namespace browser_sync {
  18
  19 // Observe and record usage of extension bookmark API.
  20 class ExtensionsActivityMonitor : public content::NotificationObserver {
  21  public:
  22   ExtensionsActivityMonitor();
  23   ~ExtensionsActivityMonitor() override;
  24
  25   // content::NotificationObserver implementation.
  26   void Observe(int type,
  27                const content::NotificationSource& source,
  28                const content::NotificationDetails& details) override;
  29
  30   const scoped_refptr<syncer::ExtensionsActivity>& GetExtensionsActivity();
  31
  32  private:
  33   scoped_refptr<syncer::ExtensionsActivity> extensions_activity_;
  34
  35 #if defined(ENABLE_EXTENSIONS)
  36   // Used only on UI loop.
  37   content::NotificationRegistrar registrar_;
  38 #endif
  39
  40   DISALLOW_COPY_AND_ASSIGN(ExtensionsActivityMonitor);
  41 };
  42
  43 }  // namespace browser_sync
  44
  45 #endif  // CHROME_BROWSER_SYNC_GLUE_EXTENSIONS_ACTIVITY_MONITOR_H_