Adding NativeWindow base class with no activity.

content/shell/android/java/src/org/chromium/content_shell/ShellManager.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.content.Context;
 import android.util.AttributeSet;
 import android.view.LayoutInflater;
 import android.view.Surface;
@@ skipping 47 matching lines @@
     }
 
     /**
      * @param window The window used to generate all shells.
      */
     public void setWindow(NativeWindow window) {
         mWindow = window;
     }
 
     /**
+     * @return The window used to generate all shells.
+     */
+    public NativeWindow getWindow() {
+        return mWindow;
+    }
+
+    /**
      * Sets the startup URL for new shell windows.
      */
     public void setStartupUrl(String url) {
         mStartupUrl = url;
     }
 
     /**
      * @return The currently visible shell view or null if one is not showing.
      */
     protected Shell getActiveShell() {
@@ skipping 29 matching lines @@
 
         return shellView;
     }
 
     private static native void nativeInit(Object shellManagerInstance);
     private static native void nativeLaunchShell(String url);
     private static native void nativeSurfaceCreated(Surface surface);
     private static native void nativeSurfaceDestroyed();
     private static native void nativeSurfaceSetSize(int width, int height);
 }