Fix libusb dependecy for Chromium with Android OS.

third_party/libusb/libusb.gyp

Index: third_party/libusb/libusb.gyp
diff --git a/third_party/libusb/libusb.gyp b/third_party/libusb/libusb.gyp
index 4fc0c7e6b9061108b2bff63121ecc54948e48b70..65923e987a2bf4fab7e7516d7589faa61f5b108b 100644
--- a/third_party/libusb/libusb.gyp
+++ b/third_party/libusb/libusb.gyp
@@ -10,6 +10,21 @@
     {
       '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': {