[refactor] Remove usages of WEBCRYPTO_HAS_ERROR_TYPE ifdef.

No longer needed now that Blink has rolled.

BUG=245025
R=rsleevi@chromium.org

Review URL: https://codereview.chromium.org/253123002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@267013 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed