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

src/com/android/settings/search/Ranking.java

@@ -30,6 +30,7 @@ import com.android.settings.WallpaperTypeSettings;
 import com.android.settings.WirelessSettings;
 import com.android.settings.accessibility.AccessibilitySettings;
 import com.android.settings.bluetooth.BluetoothSettings;
+import com.android.settings.bluetooth.MessageAccessSettings;
 import com.android.settings.deviceinfo.Memory;
 import com.android.settings.fuelgauge.BatterySaverSettings;
 import com.android.settings.fuelgauge.PowerUsageSummary;
@@ -90,6 +91,7 @@ public final class Ranking {
 
         // BT
         sRankMap.put(BluetoothSettings.class.getName(), RANK_BT);
+        sRankMap.put(MessageAccessSettings.class.getName(), RANK_BT);
 
         // DataUsage
         sRankMap.put(DataUsageSummary.class.getName(), RANK_DATA_USAGE);