[Jumbo] Enable jumbo support for //components/wifi

After adding "use_jumbo_build=true" args in GN, jumbo build can be
enabled.

Bug: 869381
Change-Id: Ia95bfd39e2f8f5b7ab1df879d12433341245d046
Reviewed-on: https://chromium-review.googlesource.com/1204372
Commit-Queue: Byoungkwon Ko <codeimpl@gmail.com>
Reviewed-by: Misha Efimov <mef@chromium.org>
Cr-Commit-Position: refs/heads/master@{#589203}

components/wifi/BUILD.gn

@@ -2,7 +2,9 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-component("wifi") {
+import("//build/config/jumbo.gni")
+
+jumbo_component("wifi") {
   sources = [
     "network_properties.cc",
     "network_properties.h",
@@ -35,7 +37,7 @@ component("wifi") {
   }
 }
 
-static_library("test_support") {
+jumbo_static_library("test_support") {
   sources = [
     "fake_wifi_service.cc",
     "fake_wifi_service.h",