[LayoutNG] Remove resetting the cached layout result upon a cache hit.

The comment indicates that previously we were setting the current
fragment based on LayoutNGMixin::SetCachedLayoutResult, which isn't
true anymore.

As a result this isn't necessary. \o/

Bug: 635619
Change-Id: I75a1b4101f5434106176797ab900b6fe2fef0604
Reviewed-on: https://chromium-review.googlesource.com/c/1473833
Commit-Queue: Ian Kilpatrick <ikilpatrick@chromium.org>
Reviewed-by: Christian Biesinger <cbiesinger@chromium.org>
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#632652}
1 file changed