GitLab

In preparation of adding support for target_environment="catalyst"
replace all uses of `use_ios_simulator` with the corresponding
check of the value of `target_environment`.

Bug: none
Change-Id: I23b0e9c05c6a427de0e5cb82d7937905b64028c8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2476278
Auto-Submit: Sylvain Defresne <sdefresne@chromium.org>
Commit-Queue: Rohit Rao <rohitrao@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#818775}