Fixed a Bluetooth discovery bug.

+ Now when a user goes to Settings->Bluetooth and turns on Bluetooth,
the device will be discoverable.

Bug: 17368189
Change-Id: Ia0d8000ddf7e3c3b43172c08ee28e7305d205462

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

@@ -98,10 +98,17 @@ public final class BluetoothSettings extends DeviceListPreferenceFragment implem
     private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
-            String action = intent.getAction();
+            final String action = intent.getAction();
+            final int state =
+                intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR);
+
             if (action.equals(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED)) {
                 updateDeviceName(context);
             }
+
+            if (state == BluetoothAdapter.STATE_ON) {
+                mInitiateDiscoverable = true;
+            }
         }
 
         private void updateDeviceName(Context context) {