Add chrome/browser/extensions to "GN check"

remoting/host/it2me/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/features.gni")
 import("//remoting/remoting_enable.gni")
 import("//remoting/remoting_srcs.gni")
 import("//remoting/remoting_locales.gni")
 import("//remoting/remoting_version.gni")
 
@@ skipping 18 matching lines @@
     ]
   }
 
   configs += [
     "//build/config/compiler:wexit_time_destructors",
     "//remoting:version",
   ]
 
   deps = [
     "//base:i18n",
-    "//net:net",
+    "//net",
     "//remoting/base",
     "//remoting/host",
     "//remoting/protocol",
     "//remoting/resources",
   ]
 }
 
 if (!is_chromeos && !is_android && enable_remoting_host) {
   if (is_win) {
     # GYP version:
@@ skipping 124 matching lines @@
       if (enable_webrtc) {
         deps += [ "//third_party/libjingle:libjingle_webrtc" ]
       }
 
       if (is_desktop_linux) {
         deps += [ "//build/config/linux/gtk2" ]
       }
     }
   }
 }