GitLab

Use appropriate (pending) RenderFrameHost when choosing associated
RenderFrameDevToolsAgentHost in WillCreateURLLoaderFactory().

Change-Id: If72a7e056cea3f8a35f98564d9d3aed3e46f6e65
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1636684
Commit-Queue: Andrey Kosyakov <caseq@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#665226}