Add a lock screen example.

ui/aura_shell/aura_shell.gyp

 # Copyright (c) 2011 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': {
     'chromium_code': 1,
   },
 
   'targets': [
@@ skipping 76 matching lines @@
         '../ui.gyp:gfx_resources',
         '../ui.gyp:ui',
         '../ui.gyp:ui_resources',
         '../ui.gyp:ui_resources_standard',
         'aura_shell',
       ],
       'sources': [
         'aura_shell_main.cc',
         'examples/bubble.cc',
         'examples/example_factory.h',
+        'examples/lock_view.cc',
         'examples/toplevel_window.cc',
         'examples/toplevel_window.h',
         'examples/window_type_launcher.cc',
         'examples/window_type_launcher.h',
         '<(SHARED_INTERMEDIATE_DIR)/ui/gfx/gfx_resources.rc',
         '<(SHARED_INTERMEDIATE_DIR)/ui/ui_resources/ui_resources.rc',
         '<(SHARED_INTERMEDIATE_DIR)/ui/ui_resources_standard/ui_resources_standard.rc',
       ],
     },
     # It's convenient for aura_shell developers to be able to build all
     # compositor and aura targets from within this solution.
     {
       'target_name': 'buildbot_targets',
       'type': 'none',
       'dependencies': [
         'aura_shell_exe',
         '../aura/aura.gyp:*',
         '../gfx/compositor/compositor.gyp:*',
         '../../views/views.gyp:views',
         '../../views/views.gyp:views_aura_desktop',
         '../../views/views.gyp:views_desktop',
         '../../views/views.gyp:views_desktop_lib',
         '../../views/views.gyp:views_unittests',
       ],
     },     
   ],
 }