extensions/browser/updater/null_extension_cache.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 EXTENSIONS_BROWSER_UPDATER_NULL_EXTENSION_CACHE_H_
   6 #define EXTENSIONS_BROWSER_UPDATER_NULL_EXTENSION_CACHE_H_
   7
   8 #include "extensions/browser/updater/extension_cache.h"
   9
  10 namespace extensions {
  11
  12 // Implements a pass-thru (i.e. do-nothing) ExtensionCache.
  13 class NullExtensionCache : public ExtensionCache {
  14  public:
  15   NullExtensionCache();
  16   ~NullExtensionCache() override;
  17
  18   // ExtensionCache implementation.
  19   void Start(const base::Closure& callback) override;
  20   void Shutdown(const base::Closure& callback) override;
  21   void AllowCaching(const std::string& id) override;
  22   bool GetExtension(const std::string& id,
  23                     base::FilePath* file_path,
  24                     std::string* version) override;
  25   void PutExtension(const std::string& id,
  26                     const base::FilePath& file_path,
  27                     const std::string& version,
  28                     const PutExtensionCallback& callback) override;
  29
  30  private:
  31   DISALLOW_COPY_AND_ASSIGN(NullExtensionCache);
  32 };
  33
  34 }  // namespace extensions
  35
  36 #endif  // EXTENSIONS_BROWSER_UPDATER_NULL_EXTENSION_CACHE_H_