Remove PrefServiceSimple, replacing it with PrefService and PrefRegistrySimple.

chrome/browser/prefs/pref_registry_simple.h

Index: chrome/browser/prefs/pref_registry_simple.h
diff --git a/chrome/browser/prefs/pref_registry_simple.h b/chrome/browser/prefs/pref_registry_simple.h
new file mode 100644
index 0000000000000000000000000000000000000000..0e6c7af45c8906476836a87308a392119d5346e5
--- /dev/null
+++ b/chrome/browser/prefs/pref_registry_simple.h
@@ -0,0 +1,43 @@
+// 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.
+
+#ifndef CHROME_BROWSER_PREFS_PREF_REGISTRY_SIMPLE_H_
+#define CHROME_BROWSER_PREFS_PREF_REGISTRY_SIMPLE_H_
+
+#include <string>
+
+#include "chrome/browser/prefs/pref_registry.h"
+
+namespace base {
+class DictionaryValue;
+class ListValue;
+}
+
+class FilePath;
+
+// A simple implementation of PrefRegistry.
+class PrefRegistrySimple : public PrefRegistry {
+ public:
+  PrefRegistrySimple();
+
+  void RegisterBooleanPref(const char* path, bool default_value);
+  void RegisterIntegerPref(const char* path, int default_value);
+  void RegisterDoublePref(const char* path, double default_value);
+  void RegisterStringPref(const char* path, const std::string& default_value);
+  void RegisterFilePathPref(const char* path, const FilePath& default_value);
+  void RegisterListPref(const char* path);
+  void RegisterDictionaryPref(const char* path);
+  void RegisterListPref(const char* path, base::ListValue* default_value);
+  void RegisterDictionaryPref(const char* path,
+                              base::DictionaryValue* default_value);
+  void RegisterInt64Pref(const char* path,
+                         int64 default_value);
+
+ private:
+  virtual ~PrefRegistrySimple();
+
+  DISALLOW_COPY_AND_ASSIGN(PrefRegistrySimple);
+};
+
+#endif  // CHROME_BROWSER_PREFS_PREF_REGISTRY_SIMPLE_H_