Introduce incognito preference settings.

chrome/browser/extensions/extension_pref_store.cc

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
 #include "chrome/browser/extensions/extension_pref_store.h"
 
-ExtensionPrefStore::ExtensionPrefStore()
-    : initialization_complete_(false) {
+#include "base/values.h"
+#include "chrome/browser/extensions/extension_pref_value_map.h"
+
+ExtensionPrefStore::ExtensionPrefStore(bool incognito_pref_store)
+    : incognito_pref_store_(incognito_pref_store) {
 }
 
-void ExtensionPrefStore::SetExtensionPref(const std::string& key,
-                                          Value* value) {
-  SetValue(key, value);
-}
+ExtensionPrefStore::~ExtensionPrefStore() {}
 
-void ExtensionPrefStore::RemoveExtensionPref(const std::string& key) {
-  RemoveValue(key);
+void ExtensionPrefStore::SetExtensionPrefValueMap(
+      ExtensionPrefValueMap* extension_pref_value_map) {
+  extension_pref_value_map_ = extension_pref_value_map;
 }
 
 void ExtensionPrefStore::OnInitializationCompleted() {
-  DCHECK(!initialization_complete_);
-  initialization_complete_ = true;
   NotifyInitializationCompleted();
 }
 
-bool ExtensionPrefStore::IsInitializationComplete() const {
-  return initialization_complete_;
+void ExtensionPrefStore::OnPrefValueChanged(const std::string& key) {
+  CHECK(extension_pref_value_map_);
+  const Value *winner =
+      extension_pref_value_map_->GetEffectivePrefValue(key,
+                                                       incognito_pref_store_);
+  if (winner)
+    SetValue(key, winner->DeepCopy());
+  else
+    RemoveValue(key);
 }