[Fetch] Support wildcard for access-control-expose-headers

Bug: 615313
Change-Id: Ie608f427083303af5afd98e8939dcfc43a266942
Reviewed-on: https://chromium-review.googlesource.com/805395
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Reviewed-by: Takeshi Yoshino <tyoshino@chromium.org>
Reviewed-by: Tsuyoshi Horo <horo@chromium.org>
Commit-Queue: Yutaka Hirano <yhirano@chromium.org>
Cr-Commit-Position: refs/heads/master@{#522082}
17 files changed