GitLab

This eliminates the remaining .typemap files for Blink-variant bindings
in favor of direct GN target configuration.

This also effectively removes support for use for .typemap files for
the Blink variant.

Bug: 1059389
Change-Id: I4683dbd472151e6f3451476b7b04182a6048a31b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2315446
Commit-Queue: Ken Rockot <rockot@google.com>
Reviewed-by: Clark DuVall <cduvall@chromium.org>
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#792022}