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      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   virtual ~ExtensionGarbageCollectorChromeOS();
     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   virtual 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_
     58