Add BT message access

+ List available email accounts
+ Allow for turning each account on/off with switches--making the message content available to bluetooth devices that can read emails (like cars)

Bug: 15720425

Change-Id: Ia0c91c1e74a2644fc99a8b902c42212453d8f86e

res/xml/bluetooth_message_access.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2014 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+        android:title="@string/bluetooth_show_message_access">
+
+    <PreferenceCategory
+            android:key="accounts"
+            android:title="@string/bluetooth_message_access" />
+
+    <Preference
+            android:key="notice"
+            android:title=""
+            android:textAppearance="?android:attr/textAppearanceSmall"
+            android:textColor="?android:attr/colorForegroundInverse"
+            android:selectable="false"
+            android:summary="@string/bluetooth_message_access_notice" />
+
+</PreferenceScreen>