Move test runner to a component

content/shell/renderer/test_runner/helper/layout_test_helper_win.cc

-// 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.
-
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <windows.h>
-
-static BOOL font_smoothing_enabled = FALSE;
-
-static void SaveInitialSettings() {
-  ::SystemParametersInfo(SPI_GETFONTSMOOTHING, 0, &font_smoothing_enabled, 0);
-}
-
-// Technically, all we need to do is disable ClearType. However,
-// for some reason, the call to SPI_SETFONTSMOOTHINGTYPE doesn't
-// seem to work, so we just disable font smoothing all together
-// (which works reliably).
-static void InstallLayoutTestSettings() {
-  ::SystemParametersInfo(SPI_SETFONTSMOOTHING, FALSE, 0, 0);
-}
-
-static void RestoreInitialSettings() {
-  ::SystemParametersInfo(
-      SPI_SETFONTSMOOTHING, static_cast<UINT>(font_smoothing_enabled), 0, 0);
-}
-
-static void SimpleSignalHandler(int signalNumber) {
-  // Try to restore the settings and then go down cleanly.
-  RestoreInitialSettings();
-  exit(128 + signalNumber);
-}
-
-int main(int, char**) {
-  // Hooks the ways we might get told to clean up...
-  signal(SIGINT, SimpleSignalHandler);
-  signal(SIGTERM, SimpleSignalHandler);
-
-  SaveInitialSettings();
-
-  InstallLayoutTestSettings();
-
-  // Let the script know we're ready.
-  printf("ready\n");
-  fflush(stdout);
-
-  // Wait for any key (or signal).
-  getchar();
-
-  RestoreInitialSettings();
-
-  return EXIT_SUCCESS;
-}