third_party/libusb: vs2010 build fixes and android-conditional build

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.
 
 {
   'targets': [
     {
       'target_name': 'libusb',
       'type': '<(library)',
       'sources': [
@@ skipping 18 matching lines @@
             'HAVE_POLL_H=1',
             'HAVE_SYS_TIME_H=1',
             'OS_LINUX=1',
             'POLL_NFDS_TYPE=nfds_t',
             'THREADS_POSIX=1',
             '_GNU_SOURCE=1',
           ],
         }],
         [ 'OS == "win"', {
           'sources': [
+            'libusb/os/poll_windows.c',
+            'libusb/os/threads_windows.c',
             'libusb/os/windows_usb.c',
-            'libusb/os/threads_windows.c',
           ],
           'include_dirs!': [
             '.',
           ],
           'include_dirs': [
             'msvc',
           ],
         }],
         [ 'OS == "mac"', {
           'sources': [
             'libusb/os/darwin_usb.c',
             'libusb/os/threads_posix.c',
           ],
           'defines': [
             'DEFAULT_VISIBILITY=',
             'HAVE_POLL_H=1',
             'HAVE_SYS_TIME_H=1',
             'OS_DARWIN=1',
             'POLL_NFDS_TYPE=nfds_t',
             'THREADS_POSIX=1',
             '_GNU_SOURCE=1',
           ],
         }],
       ],
     },
   ],
 }