Set use_custom_libcxx=false in MSVC builds Temporary workaround, support is being removed upstream: https://crrev.com/c/5963336 Before that CL, there was a condition (is_win && is_clang) which disabled it for MSVC builds. Now the flag defaults to true and is deprecated. Bug: angleproject:376074941 Change-Id: I23b4a59157d3a333f78e5af2f44447cf270a9671 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5973072 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Roman Lavrov <romanl@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>