Upgrade old app host to new app launcher on startup

This patch is a continuation of https://codereview.chromium.org/16805002/.

BUG=248825

Review URL: https://chromiumcodereview.appspot.com/17022015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@209604 0039d316-1c4b-4281-b951-d872f2087c98
int GetAppListIconIndex() {
  const int kAppListIconIndex = 5;
  const int kAppListIconIndexSxS = 6;
  const int kAppListIconIndexChromium = 1;
#if defined(GOOGLE_CHROME_BUILD)
  if (InstallUtil::IsChromeSxSProcess())
    return kAppListIconIndexSxS;
  return kAppListIconIndex;
#else
  return kAppListIconIndexChromium;
#endif
}

int GetAppListIconIndex() {
  const int kAppListIconIndex = 5;
  const int kAppListIconIndexSxS = 6;
  const int kAppListIconIndexChromium = 1;
#if defined(GOOGLE_CHROME_BUILD)
  if (InstallUtil::IsChromeSxSProcess())
    return kAppListIconIndexSxS;
  return kAppListIconIndex;
#else
  return kAppListIconIndexChromium;
#endif
}
