Fix deprecation warnings in remoting/android/

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

 // Copyright 2014 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.app.Activity;
 import android.content.ComponentName;
 import android.content.Intent;
 import android.content.ServiceConnection;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.graphics.Bitmap;
 import android.net.Uri;
 import android.os.Binder;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.os.Parcel;
 import android.os.RemoteException;
-import android.support.v7.app.ActionBarActivity;
+import android.support.v7.app.AppCompatActivity;
 import android.text.TextUtils;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 
 import org.chromium.ui.UiUtils;
 
 /**
  * The Activity for showing the Help screen.
  */
-public class HelpActivity extends ActionBarActivity {
+public class HelpActivity extends AppCompatActivity {
     private static final String PLAY_STORE_URL = "market://details?id=";
     private static final String CREDITS_URL = "file:///android_res/raw/credits.html";
 
     private static final String FEEDBACK_PACKAGE = "com.google.android.gms";
 
     private static final String FEEDBACK_CLASS =
             "com.google.android.gms.feedback.LegacyBugReportService";
 
     /**
      * Maximum dimension for the screenshot to be sent to the Send Feedback handler.  This size
@@ skipping 125 matching lines @@
             openUrl(PLAY_STORE_URL + getPackageName());
             return true;
         }
         if (id == R.id.actionbar_credits) {
             mWebView.loadUrl(CREDITS_URL);
             return true;
         }
         return super.onOptionsItemSelected(item);
     }
 }