Clean up pref change notification handling.

chrome/browser/prefs/testing_pref_store.cc

Index: chrome/browser/prefs/testing_pref_store.cc
diff --git a/chrome/browser/prefs/dummy_pref_store.cc b/chrome/browser/prefs/testing_pref_store.cc
similarity index 50%
rename from chrome/browser/prefs/dummy_pref_store.cc
rename to chrome/browser/prefs/testing_pref_store.cc
index 3a0a81a8849d6f8b38613bdedacafc4d0f6b925a..00182ef5614581695ad5a51748f5bbd69d5c1eb7 100644
--- a/chrome/browser/prefs/dummy_pref_store.cc
+++ b/chrome/browser/prefs/testing_pref_store.cc
@@ -2,21 +2,29 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/prefs/dummy_pref_store.h"
+#include "chrome/browser/prefs/testing_pref_store.h"
 
 #include "base/values.h"
 
-DummyPrefStore::DummyPrefStore()
+TestingPrefStore::TestingPrefStore()
     : prefs_(new DictionaryValue()),
       read_only_(true),
       prefs_written_(false) { }
 
-PrefStore::PrefReadError DummyPrefStore::ReadPrefs() {
+PrefStore::PrefReadError TestingPrefStore::ReadPrefs() {
   prefs_.reset(new DictionaryValue());
   return PrefStore::PREF_READ_ERROR_NONE;
 }
 
-bool DummyPrefStore::WritePrefs() {
+bool TestingPrefStore::WritePrefs() {
   prefs_written_ = true;
   return prefs_written_;
 }
+
+void TestingPrefStore::NotifyPrefValueChanged(const std::string& key) {
+  PrefStoreBase::NotifyPrefValueChanged(key);
+}
+
+void TestingPrefStore::NotifyInitializationCompleted() {
+  PrefStoreBase::NotifyInitializationCompleted();
+}