Android Chromoting: Add hooks for the official account-switcher

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.annotation.SuppressLint;
 import android.app.AlertDialog;
 import android.app.ProgressDialog;
 import android.content.DialogInterface;
@@ skipping 283 matching lines @@
         }
 
         preferences.apply();
     }
 
     /** Called when the activity is finally finished. */
     @Override
     public void onDestroy() {
         super.onDestroy();
         JniInterface.disconnectFromHost();
+        mAccountSwitcher.destroy();
     }
 
     /** Called when a child Activity exits and sends a result back to this Activity. */
     @Override
     public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        mAccountSwitcher.onActivityResult(requestCode, resultCode, data);
+
         if (requestCode == OAuthTokenFetcher.REQUEST_CODE_RECOVER_FROM_OAUTH_ERROR) {
             if (resultCode == RESULT_OK) {
                 // User gave OAuth permission to this app (or recovered from any OAuth failure),
                 // so retry fetching the token.
                 requestAuthToken(false);
             } else {
                 // User denied permission or cancelled the dialog, so cancel the request.
                 mWaitingForAuthToken = false;
                 setHostListProgressVisible(false);
             }
@@ skipping 235 matching lines @@
                 // Unreachable, but required by Google Java style and findbugs.
                 assert false : "Unreached";
         }
 
         if (dismissProgress && mProgressIndicator != null) {
             mProgressIndicator.dismiss();
             mProgressIndicator = null;
         }
     }
 }