GitLab

* Check in the result of html/semantics/embedded-content/media-elements/interfaces/HTMLElement/HTMLTrackElement/src.html
  It doesn't contain a local file path any longer.

* Remove html/semantics/forms/constraints/form-validation-validate-expected.txt
  It doesn't contain FAIL lines.

* Remove html/semantics/forms/the-input-element/month-expected.txt
  It doesn't contain FAIL lines.

* Rebaseline platform/win7/imported/wpt/html/semantics/forms/constraints/form-validation-reportValidity-expected.txt

BUG=649258
TBR=nzolghadr@chromium.org

Review-Url: https://codereview.chromium.org/2362963003
Cr-Commit-Position: refs/heads/master@{#420528}