Revert of Move base/prefs to components/prefs

base/prefs/pref_store_observer_mock.cc

Index: base/prefs/pref_store_observer_mock.cc
diff --git a/base/prefs/pref_store_observer_mock.cc b/base/prefs/pref_store_observer_mock.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f1a31bb985d2032ce2fc056e975923a899a255a3
--- /dev/null
+++ b/base/prefs/pref_store_observer_mock.cc
@@ -0,0 +1,29 @@
+// 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 "base/prefs/pref_store_observer_mock.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+PrefStoreObserverMock::PrefStoreObserverMock()
+    : initialized(false), initialization_success(false) {}
+
+PrefStoreObserverMock::~PrefStoreObserverMock() {}
+
+void PrefStoreObserverMock::VerifyAndResetChangedKey(
+    const std::string& expected) {
+  EXPECT_EQ(1u, changed_keys.size());
+  if (changed_keys.size() >= 1)
+    EXPECT_EQ(expected, changed_keys.front());
+  changed_keys.clear();
+}
+
+void PrefStoreObserverMock::OnPrefValueChanged(const std::string& key) {
+  changed_keys.push_back(key);
+}
+
+void PrefStoreObserverMock::OnInitializationCompleted(bool success) {
+  initialized = true;
+  initialization_success = success;
+}