Fix for Bug 50726 "Save extension list and "winning" prefs from extensions"

chrome/browser/prefs/in_memory_pref_store.h

Index: chrome/browser/prefs/in_memory_pref_store.h
diff --git a/chrome/browser/prefs/in_memory_pref_store.h b/chrome/browser/prefs/in_memory_pref_store.h
new file mode 100644
index 0000000000000000000000000000000000000000..f3bd8366a2ca277026f78807474267b9b636b4ae
--- /dev/null
+++ b/chrome/browser/prefs/in_memory_pref_store.h
@@ -0,0 +1,32 @@
+// Copyright (c) 2010 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_IN_MEMORY_PREF_STORE_H_
+#define CHROME_BROWSER_PREFS_IN_MEMORY_PREF_STORE_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "base/scoped_ptr.h"
+#include "chrome/common/pref_store.h"
+
+// This PrefStore maintains an in-memory dictionary of preferences.
+// When used as a default pref store, this PrefStore keeps track of default
+// preference values set when a preference is registered with the PrefService.

[Mattias Nissler (ping if slow), 2010/11/19 10:47:40]

Drop the default pref store comment. Perhaps say that it's used for the default
pref store and for the extension pref store.

[battre (please use the other), 2010/11/19 16:03:18]

Done.

+class InMemoryPrefStore : public PrefStore {
+ public:
+  InMemoryPrefStore();
+  virtual ~InMemoryPrefStore();
+
+  // PrefStore methods:
+  virtual DictionaryValue* prefs() const;
+  virtual PrefStore::PrefReadError ReadPrefs();
+
+ private:
+  // The default preference values.
+  scoped_ptr<DictionaryValue> prefs_;
+
+  DISALLOW_COPY_AND_ASSIGN(InMemoryPrefStore);
+};
+
+#endif  // CHROME_BROWSER_PREFS_IN_MEMORY_PREF_STORE_H_