Add 'default:' case to fix findbugs warning.

remoting/android/java/src/org/chromium/chromoting/Chromoting.java

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chromoting;
 
 import android.accounts.Account;
 import android.accounts.AccountManager;
 import android.accounts.AccountManagerCallback;
 import android.accounts.AccountManagerFuture;
@@ skipping 394 matching lines @@
                 finishActivity(0);
                 break;
 
             case CLOSED:
                 // No need to show toast in this case. Either the connection will have failed
                 // because of an error, which will trigger toast already. Or the disconnection will
                 // have been initiated by the user.
                 dismissProgress = true;
                 finishActivity(0);
                 break;
+
+            default:
+                // Unreachable, but required by Google Java style and findbugs.
+                assert false : "Unreached";
         }
 
         if (dismissProgress && mProgressIndicator != null) {
             mProgressIndicator.dismiss();
             mProgressIndicator = null;
         }
     }
 }