use_udev is more accurate than is_linux for udev gn deps

device/usb/BUILD.gn

Index: device/usb/BUILD.gn
diff --git a/device/usb/BUILD.gn b/device/usb/BUILD.gn
index edb8c93cbb1cc85598cc83464fef07ae101a9073..9f4b19f67d6c9371e0918e4b1fee7a20c876c64b 100644
--- a/device/usb/BUILD.gn
+++ b/device/usb/BUILD.gn
@@ -2,6 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/features.gni")
+
 assert(!is_android && !is_ios)
 
 source_ids = "//third_party/usb_ids/usb.ids"
@@ -45,7 +47,7 @@ source_set("usb") {
     "//third_party/libusb",
   ]
 
-  if (is_linux) {
+  if (use_udev) {
     deps += [ "//device/udev_linux" ]
   }
   if (is_chromeos) {