chrome/browser/extensions/extension_garbage_collector_chromeos.h

   1 // Copyright 2014 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_EXTENSIONS_EXTENSION_GARBAGE_COLLECTOR_CHROMEOS_H_
   6 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_GARBAGE_COLLECTOR_CHROMEOS_H_
   7
   8 #include "chrome/browser/extensions/extension_garbage_collector.h"
   9
  10 namespace extensions {
  11
  12 // Chrome OS specific extensions garbage collector. In addition to base class
  13 // it also cleans up extensions install directory in shared location, see
  14 // ExtensionAssetsManagerChromeOS.
  15 class ExtensionGarbageCollectorChromeOS : public ExtensionGarbageCollector {
  16  public:
  17   explicit ExtensionGarbageCollectorChromeOS(content::BrowserContext* context);
  18   ~ExtensionGarbageCollectorChromeOS() override;
  19
  20   static ExtensionGarbageCollectorChromeOS* Get(
  21       content::BrowserContext* context);
  22
  23   // Enable or disable garbage collection. See |disable_garbage_collection_|.
  24   void disable_garbage_collection() { disable_garbage_collection_ = true; }
  25   void enable_garbage_collection() { disable_garbage_collection_ = false; }
  26
  27   // Clear shared_extensions_garbage_collected_ to initiate more than one
  28   // GC in the same process for testing.
  29   static void ClearGarbageCollectedForTesting();
  30
  31  private:
  32   // Overriddes for ExtensionGarbageCollector:
  33   void GarbageCollectExtensions() override;
  34
  35   // Return true if there is no extension installation for all active profiles.
  36   bool CanGarbageCollectSharedExtensions();
  37
  38   // Do GC for shared extensions dir.
  39   void GarbageCollectSharedExtensions();
  40
  41   // TODO(rkc): HACK alert - this is only in place to allow the
  42   // kiosk_mode_screensaver to prevent its extension from getting garbage
  43   // collected. Remove this once KioskModeScreensaver is removed.
  44   // See crbug.com/280363
  45   bool disable_garbage_collection_;
  46
  47   // Shared extensions need to be processed only once but instances of this
  48   // class are created per-profile so this static variable prevents multiple
  49   // processing.
  50   static bool shared_extensions_garbage_collected_;
  51
  52   DISALLOW_COPY_AND_ASSIGN(ExtensionGarbageCollectorChromeOS);
  53 };
  54
  55 }  // namespace extensions
  56
  57 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_GARBAGE_COLLECTOR_CHROMEOS_H_