Implement feedback in Chromoting Help & Feedback screen

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;
 import android.accounts.AuthenticatorException;
 import android.accounts.OperationCanceledException;
 import android.app.ActionBar;
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.ProgressDialog;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.res.Configuration;
-import android.net.Uri;
 import android.os.Bundle;
 import android.provider.Settings;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.widget.ArrayAdapter;
 import android.widget.ListView;
 import android.widget.TextView;
 import android.widget.Toast;
 
@@ skipping 176 matching lines @@
 
     /** Called whenever an action bar button is pressed. */
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
             case R.id.actionbar_directoryrefresh:
                 refreshHostList();
                 return true;
 
             case R.id.actionbar_help:
-                {
-                    Intent intent = new Intent(this, HelpActivity.class);
-                    intent.setData(Uri.parse(HELP_URL));
-                    startActivity(intent);
-                }
+                HelpActivity.launch(this, HELP_URL);
                 return true;
 
             default:
                 return super.onOptionsItemSelected(item);
         }
     }
 
     /** Called when the user taps on a host entry. */
     public void connectToHost(HostInfo host) {
         SessionConnector connector = new SessionConnector(this, this, mHostListLoader);
@@ skipping 183 matching lines @@
                 // Unreachable, but required by Google Java style and findbugs.
                 assert false : "Unreached";
         }
 
         if (dismissProgress && mProgressIndicator != null) {
             mProgressIndicator.dismiss();
             mProgressIndicator = null;
         }
     }
 }