Implement <appview> skeleton.

chrome/chrome_renderer.gypi

 # 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.
 
 {
   'variables': {
     'chrome_renderer_sources': [
       'renderer/benchmarking_extension.cc',
       'renderer/benchmarking_extension.h',
       'renderer/extensions/app_bindings.cc',
@@ skipping 63 matching lines @@
       'renderer/net/prescient_networking_dispatcher.h',
       'renderer/net/renderer_net_predictor.cc',
       'renderer/net/renderer_net_predictor.h',
       'renderer/net_benchmarking_extension.cc',
       'renderer/net_benchmarking_extension.h',
       'renderer/playback_extension.cc',
       'renderer/playback_extension.h',
       'renderer/principals_extension_bindings.cc',
       'renderer/principals_extension_bindings.h',
       'renderer/resources/extensions/app_custom_bindings.js',
+      'renderer/resources/extensions/app_view.js',
       'renderer/resources/extensions/app_window_custom_bindings.js',
       'renderer/resources/extensions/automation_custom_bindings.js',
       'renderer/resources/extensions/browser_action_custom_bindings.js',
       'renderer/resources/extensions/chrome_direct_setting.js',
       'renderer/resources/extensions/chrome_setting.js',
       'renderer/resources/extensions/content_setting.js',
       'renderer/resources/extensions/declarative_content_custom_bindings.js',
       'renderer/resources/extensions/declarative_webrequest_custom_bindings.js',
       'renderer/resources/extensions/enterprise_platform_keys_custom_bindings.js',
       'renderer/resources/extensions/feedback_private_custom_bindings.js',
@@ skipping 315 matching lines @@
         }],
         ['enable_printing!=0', {
           'dependencies': [
             '../printing/printing.gyp:printing',
           ],
         }],
       ],
     },
   ],
 }