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/RequestPermissionActivity.java

@@ -16,8 +16,6 @@
 
 package com.android.settings.bluetooth;
 
-import com.android.settings.R;
-
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.bluetooth.BluetoothAdapter;
@@ -30,6 +28,11 @@ import android.content.IntentFilter;
 import android.os.Bundle;
 import android.util.Log;
 
+import com.android.settings.R;
+import com.android.settingslib.bluetooth.BluetoothDiscoverableTimeoutReceiver;
+import com.android.settingslib.bluetooth.LocalBluetoothAdapter;
+import com.android.settingslib.bluetooth.LocalBluetoothManager;
+
 /**
  * RequestPermissionActivity asks the user whether to enable discovery. This is
  * usually started by an application wanted to start bluetooth and or discovery
@@ -275,7 +278,7 @@ public class RequestPermissionActivity extends Activity 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);