Removed dependency on ChromeThread from JsonPrefStore and moved JsonPrefStore and PrefStore to chrome/common. This is because JsonPrefStore is needed in the service process

BUG=None.
TEST=Updated unit-tests

Review URL: http://codereview.chromium.org/2066015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@47915 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 56 insertions, 0 deletions

diff --git a/chrome/common/json_pref_store.h b/chrome/common/json_pref_store.h
new file mode 100644
index 0000000..70f5dee
--- /dev/null
+++ b/chrome/common/json_pref_store.h
@@ -0,0 +1,56 @@
+// 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_COMMON_JSON_PREF_STORE_H_
+#define CHROME_COMMON_JSON_PREF_STORE_H_
+
+#include <string>
+
+#include "base/scoped_ptr.h"
+#include "chrome/common/pref_store.h"
+#include "chrome/common/important_file_writer.h"
+
+namespace base {
+class MessageLoopProxy;
+}
+
+class DictionaryValue;
+class FilePath;
+
+class JsonPrefStore : public PrefStore,
+                      public ImportantFileWriter::DataSerializer {
+ public:
+  // |file_message_loop_proxy| is the MessageLoopProxy for a thread on which
+  // file I/O can be done.
+  JsonPrefStore(const FilePath& pref_filename,
+                base::MessageLoopProxy* file_message_loop_proxy);
+  virtual ~JsonPrefStore();
+
+  // PrefStore methods:
+  virtual bool ReadOnly() { return read_only_; }
+
+  virtual DictionaryValue* prefs() { return prefs_.get(); }
+
+  virtual PrefReadError ReadPrefs();
+
+  virtual bool WritePrefs();
+
+  virtual void ScheduleWritePrefs();
+
+  // ImportantFileWriter::DataSerializer methods:
+  virtual bool SerializeData(std::string* data);
+
+ private:
+  FilePath path_;
+
+  scoped_ptr<DictionaryValue> prefs_;
+
+  bool read_only_;
+
+  // Helper for safely writing pref data.
+  ImportantFileWriter writer_;
+};
+
+#endif  // CHROME_COMMON_JSON_PREF_STORE_H_
+