Bluetooth: Fix to avoid framework reboot during monkey testing

When running monkeyrunner, sometimes the framework is disconnected due
to an unhandled Java exception while binding the PAN service (when it
is unsuccessful). Handing the Java exception while binding PAN service
solves this issue.

Change-Id: Idea710593a3f9496305f636042605303e73e7749
diff --git a/core/java/android/bluetooth/BluetoothPan.java b/core/java/android/bluetooth/BluetoothPan.java
index eb6166a..744f942 100644
--- a/core/java/android/bluetooth/BluetoothPan.java
+++ b/core/java/android/bluetooth/BluetoothPan.java
@@ -138,7 +138,6 @@
         }
         if (VDBG) Log.d(TAG, "BluetoothPan() call bindService");
         doBind();
-        if (VDBG) Log.d(TAG, "BluetoothPan(), bindService called");
     }
 
     boolean doBind() {
@@ -185,12 +184,22 @@
     final private IBluetoothStateChangeCallback mStateChangeCallback = new IBluetoothStateChangeCallback.Stub() {
 
         @Override
-        public void onBluetoothStateChange(boolean on) throws RemoteException {
-            //Handle enable request to bind again.
+        public void onBluetoothStateChange(boolean on) {
+            // Handle enable request to bind again.
+            Log.d(TAG, "onBluetoothStateChange on: " + on);
             if (on) {
-                Log.d(TAG, "onBluetoothStateChange(on) call bindService");
-                doBind();
-                if (VDBG) Log.d(TAG, "BluetoothPan(), bindService called");
+                try {
+                    if (mPanService == null) {
+                        if (VDBG) Log.d(TAG, "onBluetoothStateChange calling doBind()");
+                        doBind();
+                    }
+
+                } catch (IllegalStateException e) {
+                    Log.e(TAG,"onBluetoothStateChange: could not bind to PAN service: ", e);
+
+                } catch (SecurityException e) {
+                    Log.e(TAG,"onBluetoothStateChange: could not bind to PAN service: ", e);
+                }
             } else {
                 if (VDBG) Log.d(TAG,"Unbinding service...");
                 synchronized (mConnection) {