Capture/Replay: don't capture MS depth renderbuffer pixels Vulkan can't resolve depth textures and no emulation has been implemented todo so when required, therefore we hit an assertion in ImageHelper::readPixels if we try to read back the MS depth renderbuffer pixels. To work around this problem don't read back the data. Reorder the renderbuffer readback code a bit to make the code easier to follow. Bug: angleproject:6324 Change-Id: I6fb4d0f993b061393b249706efe4b2c9d44a6f96 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3340940 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Cody Northrop <cnorthrop@google.com> Commit-Queue: Gert Wollny <gert.wollny@collabora.com>