Early return in ResourceFetcher::RequestResource() when detached

To ensure the ResourceFetcherProperty is not detached and
SecurityOrigin is non-null when RequestResource() starts
processing the request.

Bug: 914739
Change-Id: I9d89c76ce9bdaf050727f556e67ccf31455e2e24
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1583392
Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
Commit-Queue: Hiroshige Hayashizaki <hiroshige@chromium.org>
Cr-Commit-Position: refs/heads/master@{#653917}
1 file changed