Hook up use_system_libjpeg for Android

third_party/libjpeg/libjpeg.gyp

 # Copyright (c) 2009 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.
 
 {
   # This file handles building both with our local libjpeg and with the system
   # libjpeg.
   'conditions': [
     ['use_system_libjpeg==0', {
       'targets': [
@@ skipping 74 matching lines @@
           'direct_dependent_settings': {
             'defines': [
               'USE_SYSTEM_LIBJPEG',
             ],
             'conditions': [
               ['os_bsd==1', {
                 'include_dirs': [
                   '/usr/local/include',
                 ],
               }],
+              ['OS=="android"', {
+                'include_dirs': [
+                  '<(android_src)/external/jpeg',
+                ],
+              }],
             ],
           },
           'link_settings': {
             'libraries': [
               '-ljpeg',
             ],
           },
         }
       ],
     }],
   ],
 }