Capture/Replay: Break up SetupContext While getting NBA2K20 MEC to work, discovered that SetupContext was so large, it was causing a stack overflow. To fix, simply break up the function into a series of helpers if the number of calls exceeds a set limit. Test: NBA2K20 MEC Bug: b/160014453 Bug: angleproject:4048 Change-Id: I332d5dea5fc4e14700b68150cbe31a4c88cdae89 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2321739 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Manh Nguyen <nguyenmh@google.com> Commit-Queue: Cody Northrop <cnorthrop@google.com>