Index: chrome/browser/prefs/pref_hash_filter.h |
diff --git a/chrome/browser/prefs/pref_hash_filter.h b/chrome/browser/prefs/pref_hash_filter.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..baa7811a05aca3fd5ed75039ac5f2f8f626e780a |
--- /dev/null |
+++ b/chrome/browser/prefs/pref_hash_filter.h |
@@ -0,0 +1,44 @@ |
+// Copyright (c) 2013 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_PREFS_PREF_HASH_FILTER_H_ |
+#define CHROME_BROWSER_PREFS_PREF_HASH_FILTER_H_ |
+ |
+#include <set> |
+#include <string> |
+ |
+#include "base/basictypes.h" |
+#include "base/compiler_specific.h" |
+#include "base/memory/scoped_ptr.h" |
+#include "base/prefs/pref_filter.h" |
+ |
+class PrefHashStore; |
+ |
+namespace base { |
+class DictionaryValue; |
+class Value; |
+} // namespace base |
+ |
+// Intercepts preference values as they are loaded from disk and verifies them |
+// using a PrefHashStore. Keeps the PrefHashStore contents up to date as values |
+// are changed. |
+class PrefHashFilter : public PrefFilter { |
+ public: |
+ explicit PrefHashFilter(scoped_ptr<PrefHashStore> pref_hash_store); |
+ virtual ~PrefHashFilter(); |
+ |
+ // PrefFilter implementation. |
+ virtual void FilterOnLoad(base::DictionaryValue* pref_store_contents) |
+ OVERRIDE; |
+ virtual void FilterUpdate(const std::string& path, |
+ const base::Value* value) OVERRIDE; |
+ |
+ private: |
+ scoped_ptr<PrefHashStore> pref_hash_store_; |
+ std::set<std::string> tracked_paths_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(PrefHashFilter); |
+}; |
+ |
+#endif // CHROME_BROWSER_PREFS_PREF_HASH_FILTER_H_ |