Resize and save custom wallpaper to large and small size

chrome/chrome_browser.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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
@@ skipping 748 matching lines @@
         'browser/chromeos/login/registration_screen.cc',
         'browser/chromeos/login/registration_screen.h',
         'browser/chromeos/login/remove_user_delegate.h',
         'browser/chromeos/login/rounded_rect_painter.cc',
         'browser/chromeos/login/rounded_rect_painter.h',
         'browser/chromeos/login/screen_locker.cc',
         'browser/chromeos/login/screen_locker.h',
         'browser/chromeos/login/screen_locker_delegate.cc',
         'browser/chromeos/login/screen_locker_delegate.h',
         'browser/chromeos/login/screen_observer.h',
+        'browser/chromeos/login/simple_png_encoder.cc',
+        'browser/chromeos/login/simple_png_encoder.h',
         'browser/chromeos/login/simple_web_view_dialog.cc',
         'browser/chromeos/login/simple_web_view_dialog.h',
         'browser/chromeos/login/take_photo_view.cc',
         'browser/chromeos/login/take_photo_view.h',
         'browser/chromeos/login/test_attempt_state.cc',
         'browser/chromeos/login/test_attempt_state.h',
         'browser/chromeos/login/textfield_with_margin.cc',
         'browser/chromeos/login/textfield_with_margin.h',
         'browser/chromeos/login/tpm_password_fetcher.cc',
         'browser/chromeos/login/tpm_password_fetcher.h',
@@ skipping 4872 matching lines @@
           'includes': [ '../build/jni_generator.gypi' ],
           'dependencies': [
             'android_jar_jni_headers',
           ],
         },
       ],
      },
     ],
   ],
 }