Fix libusb dependecy for Chromium with Android OS.

third_party/libusb/libusb.gyp

 # 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': {
     'use_system_libusb%': 0,
   },
   'targets': [
     {
       'target_name': 'libusb',
       'conditions': [
+        ['OS == "android"', {

[Lei Zhang, 2012/06/05 18:22:53]

Why is this in a separate section by itself, and not in the condition block
below at line 60?

[Paweł Hajdan Jr., 2012/06/06 08:20:00]

Please do what Lei said. It makes no sense to duplicate this code.

This is _not_ stylistic.

[felipeg, 2012/06/06 09:48:31]

Done.

+          'sources': [
+            'src/libusb/os/linux_usbfs.c',
+            'src/libusb/os/threads_posix.c',
+          ],
+          'defines': [
+            'DEFAULT_VISIBILITY=',
+            'HAVE_POLL_H=1',
+            'HAVE_SYS_TIME_H=1',
+            'OS_LINUX=1',
+            'POLL_NFDS_TYPE=nfds_t',
+            'THREADS_POSIX=1',
+            '_GNU_SOURCE=1',
+          ],
+        }],
         ['OS == "linux" and use_system_libusb', {
           'type': 'none',
           'direct_dependent_settings': {
             'defines': [
               'USE_SYSTEM_LIBUSB',
             ],
             'cflags': [
               '<!@(pkg-config --cflags libusb-1.0)',
             ],
             'link_settings': {
@@ skipping 61 matching lines @@
                 'THREADS_POSIX=1',
                 '_GNU_SOURCE=1',
               ],
             }],
           ],
         }],
       ],
     },
   ],
 }