Add more components unittests to the GN build.

components/dom_distiller/webui/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.
 
 # GYP version: components/dom_distiller.gyp:dom_distiller_webui
 static_library("webui") {
   sources = [
     "dom_distiller_handler.cc",
     "dom_distiller_handler.h",
     "dom_distiller_ui.cc",
     "dom_distiller_ui.h",
   ]
 
   deps = [
     "//base",
     "//components/dom_distiller/core",
     "//components/dom_distiller/core/proto",
     "//components/resources",
     "//components/strings",
     "//content/public/browser",
+    "//net",
     "//skia",
     "//sync",
+    "//url",
   ]
 }