Start upstreaming accessibility.

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;
@@ skipping 81 matching lines @@
     protected void onNewIntent(Intent intent) {
         String url = getUrlFromIntent(intent);
         if (!TextUtils.isEmpty(url)) {
             Shell activeView = getActiveShell();
             if (activeView != null) {
                 activeView.loadUrl(url);
             }
         }
     }
 
+    @Override
+    protected void onPause() {
+        ContentView view = getActiveContentView();
+        if (view != null) view.onActivityPause();
+
+        super.onPause();
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+
+        ContentView view = getActiveContentView();
+        if (view != null) view.onActivityResume();
+    }
+
     private static String getUrlFromIntent(Intent intent) {
         return intent != null ? intent.getDataString() : null;
     }
 
     /**
      * @return The {@link ShellManager} configured for the activity or null if it has not been
      *         created yet.
      */
     public ShellManager getShellManager() {
         return mShellManager;
     }
 
     /**
      * @return The currently visible {@link Shell} or null if one is not showing.
      */
     public Shell getActiveShell() {
         return mShellManager != null ? mShellManager.getActiveShell() : null;
     }
 
+    /**
+     * @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;
+    }
+
     private void initializeContentViewResources() {
         AppResource.DIMENSION_LINK_PREVIEW_OVERLAY_RADIUS = R.dimen.link_preview_overlay_radius;
         AppResource.DRAWABLE_LINK_PREVIEW_POPUP_OVERLAY = R.drawable.popup_zoomer_overlay;
     }
 }