Add more components unittests to the GN build.

components/dom_distiller/core/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.gypi:dom_distiller_core
 source_set("core") {
   sources = [
     "../android/component_jni_registrar.cc",
     "../android/component_jni_registrar.h",
     "article_attachments_data.cc",
@@ skipping 36 matching lines @@
     "viewer.cc",
     "viewer.h",
   ]
 
   public_deps = [
     "//components/dom_distiller/core/proto",
     "//third_party/dom_distiller_js:proto",
   ]
   deps = [
     "//base",
+    "//base:prefs",
     "//components/leveldb_proto",
+    "//components/pref_registry",
     "//components/resources",
     "//components/strings",
     "//net",
     "//skia",
     "//sync",
     "//ui/base",
     "//url",
   ]
 
   if (is_android) {
     sources += [
       "dom_distiller_service_android.cc",
       "dom_distiller_service_android.h",
     ]
     deps += [ ":jni_headers" ]
   }
 }
 
 # GYP version: components/dom_distiller.gypi:dom_distiller_test_support
-static_library("test_support") {
+source_set("test_support") {
   testonly = true
   sources = [
     "dom_distiller_test_util.cc",
     "dom_distiller_test_util.h",
     "fake_distiller.cc",
     "fake_distiller.h",
     "fake_distiller_page.cc",
     "fake_distiller_page.h",
   ]
 
   deps = [
     ":core",
+    "//base",
     "//components/leveldb_proto:test_support",
     "//sync",
     "//testing/gmock",
     "//testing/gtest",
+    "//url",
   ]
 }
 
 source_set("unit_tests") {
   testonly = true
   sources = [
     "article_entry_unittest.cc",
     "distilled_content_store_unittest.cc",
     "distilled_page_prefs_unittests.cc",
     "distiller_unittest.cc",
     "distiller_url_fetcher_unittest.cc",
     "dom_distiller_model_unittest.cc",
     "dom_distiller_service_unittest.cc",
     "dom_distiller_store_unittest.cc",
     "task_tracker_unittest.cc",
     "url_utils_unittest.cc",
     "viewer_unittest.cc",
   ]
 
   deps = [
     ":core",
     ":test_support",
+    "//base",
+    "//components/leveldb_proto:test_support",
+    "//components/pref_registry:test_support",
+    "//net:test_support",
+    "//sync",
     "//testing/gmock",
     "//testing/gtest",
+    "//url",
   ]
 }
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 
   generate_jni("jni_headers") {
     sources = [
       "../android/java/src/org/chromium/components/dom_distiller/core/DistilledPagePrefs.java",
       "../android/java/src/org/chromium/components/dom_distiller/core/DomDistillerService.java",
       "../android/java/src/org/chromium/components/dom_distiller/core/DomDistillerUrlUtils.java",
     ]
     jni_package = "dom_distiller_core"
   }
 }