test_runner: Add TestInfoExtractor to get the list of test-urls.

components/web_view/test_runner/BUILD.gn

 # Copyright 2015 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("//mojo/public/mojo_application.gni")
 import("//third_party/mojo/src/mojo/public/tools/bindings/mojom.gni")
 
 executable("test_runner") {
   output_name = "layout_test_runner"
+  testonly = true
+
   sources = [
     "launcher.cc",
     "launcher.h",
     "main.cc",
   ]
 
   deps = [
     "//base",
     "//build/config/sanitizers:deps",
     "//mojo/common",
@@ skipping 10 matching lines @@
 
   if (is_linux) {
     data_deps += [
       "//breakpad:dump_syms",
       "//breakpad:minidump_stackwalk",
     ]
   }
 }
 
 mojo_native_application("web_view_test_runner") {
+  testonly = true
+
   sources = [
     "test_runner_application_delegate.cc",
     "test_runner_application_delegate.h",
     "test_runner_main.cc",
   ]
 
   deps = [
     "//base",
     "//components/html_viewer/public/interfaces",
+    "//components/test_runner",
     "//components/view_manager/public/cpp",
     "//components/web_view/public/cpp",
     "//components/web_view/public/interfaces",
     "//components/web_view/test_runner/public/interfaces",
     "//mojo/application/public/cpp",
     "//mojo/common",
     "//mojo/converters/geometry",
-    "//net",
     "//ui/gfx/geometry",
     "//url",
   ]
 }