android: Improve ActivityStatus and add ChromiumActivity.

content/shell/android/java/src/org/chromium/content_shell/ContentShellActivity.java

 // Copyright (c) 2012 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.content_shell;
 
 import android.app.Activity;
 import android.content.Intent;
 import android.os.Bundle;
 import android.text.TextUtils;
 import android.util.Log;
 import android.view.KeyEvent;
 
+import org.chromium.base.ChromiumActivity;
 import org.chromium.content.app.LibraryLoader;
 import org.chromium.content.browser.ActivityContentVideoViewDelegate;
 import org.chromium.content.browser.ContentVideoView;
 import org.chromium.content.browser.ContentView;
 import org.chromium.content.browser.DeviceUtils;
 import org.chromium.content.common.CommandLine;
 import org.chromium.ui.gfx.ActivityNativeWindow;
 
 /**
  * Activity for managing the Content Shell.
  */
-public class ContentShellActivity extends Activity {
+public class ContentShellActivity extends ChromiumActivity {
 
     public static final String COMMAND_LINE_FILE = "/data/local/tmp/content-shell-command-line";
     private static final String TAG = ContentShellActivity.class.getName();
 
     private static final String ACTIVE_SHELL_URL_KEY = "activeUrl";
     public static final String DEFAULT_SHELL_URL = "http://www.google.com";
     public static final String COMMAND_LINE_ARGS_KEY = "commandLineArgs";
 
     private ShellManager mShellManager;
     private ActivityNativeWindow mActivityNativeWindow;
@@ skipping 133 matching lines @@
 
     /**
      * @return The {@link ContentView} owned by the currently visible {@link Shell} or null if one
      *         is not showing.
      */
     public ContentView getActiveContentView() {
         Shell shell = getActiveShell();
         return shell != null ? shell.getContentView() : null;
     }
 }