Make it possible to disable udev in linux

content/content_browser.gypi

 # 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.
 
 {
   'dependencies': [
     'browser/speech/proto/speech_proto.gyp:speech_proto',
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../google_apis/google_apis.gyp:google_apis',
@@ skipping 1121 matching lines @@
       'dependencies': [
         '../build/linux/system.gyp:dbus',
       ],
       'sources!': [
         'browser/geolocation/wifi_data_provider_linux.cc',
         'browser/power_save_blocker_linux.cc',
         'browser/renderer_host/gtk_key_bindings_handler.cc',
         'browser/renderer_host/gtk_key_bindings_handler.h',
       ],
     }],
+    ['OS=="linux" and use_udev==0', {
+      'sources!': [
+        'browser/gamepad/gamepad_platform_data_fetcher_linux.cc',
+        'browser/udev_linux.cc',
+        'browser/udev_linux.h',
+        'browser/device_monitor_linux.cc',
+        'browser/device_monitor_linux.h',
+      ],
+      'sources': [
+        'browser/gamepad/gamepad_platform_data_fetcher.cc',
+      ],
+      'dependencies!': [
+        '../build/linux/system.gyp:udev',
+      ],
+    }, {
+      'defines': [

[Lei Zhang, 2013/03/04 21:10:25]

This would define USE_UDEV on Win/Mac. How about we move this up to ~line 1075,
inside a OS==linux block?

[Mostyn Bramley-Moore, 2013/03/05 00:02:33]

Done.

+        'USE_UDEV',
+      ],
+    }],
     ['os_bsd==1', {
       'sources/': [
         ['exclude', '^browser/gamepad/gamepad_platform_data_fetcher_linux\\.cc$'],
         ['exclude', '^browser/geolocation/wifi_data_provider_linux\\.cc$'],
       ],
     }],
     ['use_aura!=1 and OS!="win"', {
       'sources!': [
         'browser/renderer_host/ui_events_helper.cc',
         'browser/renderer_host/ui_events_helper.h',
@@ skipping 73 matching lines @@
         ['exclude', '^browser/speech/'],
       ],
     }],
     ['linux_use_libgps==1', {
       'dependencies': [
         '../build/linux/system.gyp:libgps',
       ],
     }],
   ],
 }