Use generated shim headers for libusb

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 == "linux" and use_system_libusb', {
+        ['OS == "linux" and use_system_libusb==1', {
           'type': 'none',
+          'variables': {
+            'headers_root_path': 'src/libusb',
+            'header_filenames': [
+              'libusb.h',
+            ],
+          },
+          'includes': [
+            '../../build/shim_headers.gypi',
+          ],
           'direct_dependent_settings': {
-            'defines': [
-              'USE_SYSTEM_LIBUSB',
-            ],
             'cflags': [
               '<!@(pkg-config --cflags libusb-1.0)',
             ],
             'link_settings': {
               'ldflags': [
                 '<!@(pkg-config --libs-only-L --libs-only-other libusb-1.0)',
               ],
               'libraries': [
                 '<!@(pkg-config --libs-only-l libusb-1.0)',
               ],
             },
           },
         }, {
           'type': '<(library)',
           'sources': [
             'src/libusb/core.c',
             'src/libusb/descriptor.c',
             'src/libusb/io.c',
             'src/libusb/sync.c',
           ],
           'include_dirs': [
             'src',
             'src/libusb',
             'src/libusb/os',
           ],
           'direct_dependent_settings': {
             'include_dirs': [
-              '.',
+              'src/libusb',
             ],
           },
           'conditions': [
             [ 'OS == "linux" or OS == "android"', {
               'sources': [
                 'src/libusb/os/linux_usbfs.c',
                 'src/libusb/os/threads_posix.c',
               ],
               'defines': [
                 'DEFAULT_VISIBILITY=',
@@ skipping 32 matching lines @@
                 'THREADS_POSIX=1',
                 '_GNU_SOURCE=1',
               ],
             }],
           ],
         }],
       ],
     },
   ],
 }