chrome/browser/extensions/external_component_loader.h

   1 // Copyright (c) 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_EXTENSIONS_EXTERNAL_COMPONENT_LOADER_H_
   6 #define CHROME_BROWSER_EXTENSIONS_EXTERNAL_COMPONENT_LOADER_H_
   7
   8 #include <string>
   9
  10 #include "base/compiler_specific.h"
  11 #include "chrome/browser/extensions/external_loader.h"
  12 #include "chrome/browser/profiles/profile.h"
  13
  14 namespace extensions {
  15
  16 // A specialization of the ExternalLoader that loads a hard-coded list of
  17 // external extensions, that should be considered components of chrome (but
  18 // unlike Component extensions, these extensions are installed from the webstore
  19 // and don't get access to component only APIs.
  20 // Instances of this class are expected to be created and destroyed on the UI
  21 // thread and they are expecting public method calls from the UI thread.
  22 class ExternalComponentLoader : public ExternalLoader {
  23  public:
  24   explicit ExternalComponentLoader(Profile* profile);
  25
  26  protected:
  27   void StartLoading() override;
  28
  29  private:
  30   friend class base::RefCountedThreadSafe<ExternalLoader>;
  31   ~ExternalComponentLoader() override;
  32
  33   void AddExternalExtension(const std::string& extension_id);
  34
  35   // The profile that this loader is associated with. It listens for
  36   // preference changes for that profile.
  37   Profile* profile_;
  38   DISALLOW_COPY_AND_ASSIGN(ExternalComponentLoader);
  39 };
  40
  41 }  // namespace extensions
  42
  43 #endif  // CHROME_BROWSER_EXTENSIONS_EXTERNAL_COMPONENT_LOADER_H_