Only emit SetupReplay() after all captured frames have been run,
so that InitializeReplay() is called with values of
readBufferSize and the maxClientArraySize that are sufficiently
large for all frames.

Bug: angleproject:5965
Bug: angleproject:5895
Change-Id: Ic59597dc27f733fb210d7cc5a144a86e54cd2040
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2894486
Commit-Queue: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Cody Northrop <cnorthrop@google.com>