browser: Split out the prefs registration of invert bubble from views file.

chrome/browser/accessibility/invert_bubble_prefs.cc

+// 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 "chrome/browser/accessibility/invert_bubble_prefs.h"
+
+#include "chrome/browser/prefs/pref_service.h"
+#include "chrome/common/pref_names.h"
+
+namespace browser {
+
+void RegisterInvertBubbleUserPrefs(PrefService* prefs) {
+  prefs->RegisterBooleanPref(prefs::kInvertNotificationShown,
+                             false,
+                             PrefService::UNSYNCABLE_PREF);
+}
+
+}  // namespace browser