1. Enable glColorspace if VK_EXT_swapchain_colorspace is supported, remove dependency on VK_KHR_image_format_list. 2. Enable VK_KHR_image_format_list support on Mali GPU. 3. Fix PbufferTest.ClearAndBindTexImageSrgbSkipDecode test tolerance issue. Bug: angleproject:2514 Bug: angleproject:5281 Change-Id: I2ed54a14afc7c3aee5a5980bd300ab052ebab3d1 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2793852 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
