Move the bits of Prefs where production code has only trivially easy

to break dependencies back to Chrome.

This leaves the following in chrome/ for now, which will move later:

- PrefService, to move once sync dependencies and dependencies on
  Chrome-specific pref stores are externalized.

- PrefNotifierImpl and PrefObserverMock, to move once
  NotificationSource dependency is broken.

- PrefValueStore, to move once PrefModelAssociatior dependency is
  externalized.

- ScopedUserPrefUpdate, to move once PrefService moves.

TBR=ben@chromium.org
BUG=155525


Review URL: https://chromiumcodereview.appspot.com/11243002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@163354 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 26 insertions, 0 deletions

diff --git a/base/prefs/default_pref_store.cc b/base/prefs/default_pref_store.cc
new file mode 100644
index 0000000..c031221
--- /dev/null
+++ b/base/prefs/default_pref_store.cc
@@ -0,0 +1,26 @@
+// Copyright (c) 2012 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/default_pref_store.h"
+
+using base::Value;
+
+DefaultPrefStore::DefaultPrefStore() {}
+
+void DefaultPrefStore::SetDefaultValue(const std::string& key, Value* value) {
+  CHECK(GetValue(key, NULL) == READ_NO_VALUE);
+  SetValue(key, value);
+}
+
+void DefaultPrefStore::RemoveDefaultValue(const std::string& key) {
+  CHECK(GetValue(key, NULL) == READ_OK);
+  RemoveValue(key);
+}
+
+base::Value::Type DefaultPrefStore::GetType(const std::string& key) const {
+  const Value* value;
+  return GetValue(key, &value) == READ_OK ? value->GetType() : Value::TYPE_NULL;
+}
+
+DefaultPrefStore::~DefaultPrefStore() {}