Move isolatable bluetooth code to SettingsLib

Move the non-ui bluetooth control/tracking code to SettingsLib so
that it can be shared with others.

Mostly just move classes to frameworks/base/packages/SettingsLib,
however a few things had to move around.
 - Dock handling had to move back to code still in settings
 - Local preference related code had to be moved back to settings
 - Added an error flow from SettingsLib to Settings

Depends on I69fd888362c6dbb325f6113b32c4b15cc6a23a41
Bug: 19180466
Change-Id: Ie57fe26a27bbb0adc2ef69e042a05c7290c6a52a

src/com/android/settings/bluetooth/RequestPermissionHelperActivity.java

@@ -19,6 +19,8 @@ package com.android.settings.bluetooth;
 import com.android.internal.app.AlertActivity;
 import com.android.internal.app.AlertController;
 import com.android.settings.R;
+import com.android.settingslib.bluetooth.LocalBluetoothAdapter;
+import com.android.settingslib.bluetooth.LocalBluetoothManager;
 
 import android.app.Activity;
 import android.bluetooth.BluetoothAdapter;
@@ -146,7 +148,7 @@ public class RequestPermissionHelperActivity extends AlertActivity implements
             return true;
         }
 
-        LocalBluetoothManager manager = LocalBluetoothManager.getInstance(this);
+        LocalBluetoothManager manager = Utils.getLocalBtManager(this);
         if (manager == null) {
             Log.e(TAG, "Error: there's a problem starting Bluetooth");
             setResult(RESULT_CANCELED);