1 files changed, 33 insertions, 0 deletions
diff --git a/chrome/browser/extensions/external_pref_extension_provider.h b/chrome/browser/extensions/external_pref_extension_provider.h
new file mode 100644
index 0000000..a52be411
--- /dev/null
+++ b/chrome/browser/extensions/external_pref_extension_provider.h
@@ -0,0 +1,33 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_EXTENSION_PROVIDER_H_
+#define CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_EXTENSION_PROVIDER_H_
+
+#include <set>
+#include <string>
+
+#include "chrome/browser/extensions/external_extension_provider.h"
+
+class DictionaryValue;
+class Version;
+
+// A specialization of the ExternalExtensionProvider that uses preferences to
+// look up which external extensions are registered.
+class ExternalPrefExtensionProvider : public ExternalExtensionProvider {
+ public:
+  explicit ExternalPrefExtensionProvider(DictionaryValue* prefs);
+  virtual ~ExternalPrefExtensionProvider();
+
+  // ExternalExtensionProvider implementation:
+  virtual void VisitRegisteredExtension(
+      Visitor* visitor, const std::set<std::string>& ids_to_ignore) const;
+
+  virtual Version* RegisteredVersion(std::string id,
+                                     Extension::Location* location) const;
+ protected:
+  scoped_ptr<DictionaryValue> prefs_;
+};
+
+#endif  // CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_EXTENSION_PROVIDER_H_