Add pak file support for content shell and android apks.

content/shell/android/java/src/org/chromium/content_shell/ContentShellApplication.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.Application;
 import org.chromium.content.app.LibraryLoader;
+import org.chromium.content.browser.ResourceExtractor;
 
 /**
  * Entry point for the content shell application.  Handles initialization of information that needs
  * to be shared across the main activity and the sandbox services created.
  */
 public class ContentShellApplication extends Application {
 
-    // TODO(jrg): do not downstream this filename!
     private static final String NATIVE_LIBRARY = "content_shell_content_view";
+    private static final String[] MANDATORY_PAK_FILES = new String[] {"content_shell.pak"};
 
     @Override
     public void onCreate() {
         super.onCreate();
-        // TODO(tedchoc): Initialize the .pak files to load
+        ResourceExtractor.setMandatoryPaksToExtract(MANDATORY_PAK_FILES);
         LibraryLoader.setLibraryToLoad(NATIVE_LIBRARY);
     }
 
 }