Try to keep connection state more up to date

It seems that connection state isn't always correct, make sure we
update it every time a device changes state, so that we don't stay
connected while no device is connected.

Bug: 21896051
Change-Id: I5aa398f33a916609742e22ce5affd4211ed0a626
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/BluetoothControllerImpl.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/BluetoothControllerImpl.java
index 3cc9297..daa84ad 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/policy/BluetoothControllerImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/BluetoothControllerImpl.java
@@ -154,6 +154,12 @@
     }
 
     private void updateConnected() {
+        // Make sure our connection state is up to date.
+        int state = mLocalBluetoothManager.getBluetoothAdapter().getConnectionState();
+        if (state != mConnectionState) {
+            mConnectionState = state;
+            mHandler.sendEmptyMessage(H.MSG_STATE_CHANGED);
+        }
         if (mLastDevice != null && mLastDevice.isConnected()) {
             // Our current device is still valid.
             return;
@@ -203,9 +209,9 @@
 
     @Override
     public void onConnectionStateChanged(CachedBluetoothDevice cachedDevice, int state) {
-        mConnectionState = state;
         mLastDevice = cachedDevice;
         updateConnected();
+        mConnectionState = state;
         mHandler.sendEmptyMessage(H.MSG_STATE_CHANGED);
     }