GitLab

GetOriginForURLLoaderFactoryUnchecked can calculate the origin of the
parent frame from the |navigation_request| parameter - there is no need
to separately pass the |target_frame| parameter.

Additionally, before this CL, the caller would calculate |target_frame|
by calling GetRenderFrameHost() which only works at
WILL_PROCESS_RESPONSE or later time.  Depending on
|frame_tree_node()->parent()| means that
GetOriginForURLLoaderFactoryUnchecked may be called earlier - this will
hopefully help in the future call GetOriginForURLLoaderFactory when
creating a speculative/provisional frame (in this scenario the
|target_frame| does not exist yet).

Bug: 1098938
Change-Id: I51f1d00dd2b85cb9f50aec5e07e88428655bfff5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2288810
Commit-Queue: Łukasz Anforowicz <lukasza@chromium.org>
Reviewed-by: Aaron Colwell <acolwell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#786540}