Remove --disable-app-shims.

App shims have been enabled by default for 3 milestones
(since r242711).

BUG=350161

Review URL: https://codereview.chromium.org/298953002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@272786 0039d316-1c4b-4281-b951-d872f2087c98
void GetSanitizedEnabledFlags(
    FlagsStorage* flags_storage, std::set<std::string>* result) {
  SanitizeList(flags_storage);
  *result = flags_storage->GetFlags();
}

void GetSanitizedEnabledFlags(
    FlagsStorage* flags_storage, std::set<std::string>* result) {
  SanitizeList(flags_storage);
  *result = flags_storage->GetFlags();
}
