Limit max input length of printer address to 63 characters.

- Fixes a regression where users were able to type in >63 characters,
  exceeding the maximum length allowed for a printer address.
- According to RFC, 63 characters is the max length allowed for a
  hostname.

Bug: 963856
Test: End to End manual
Change-Id: I0d2e8a224755037a027422c11b9b5e4f5d05fa92
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1620600
Reviewed-by: Bailey Berro <baileyberro@chromium.org>
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: jimmy gong <jimmyxgong@chromium.org>
Cr-Commit-Position: refs/heads/master@{#662899}
2 files changed