Revert "Vulkan: readPixels improvement - use DynamicBuffer" The tentative fix did not fix the issue on Android Nexus 5x. This reverts commit 8688bf46f1835dbe7fff4480350b1bc0ef02ff78. NOTRY=true Change-Id: If4a517028951a2232a87aeaf1045a5df731d17d3 Reviewed-on: https://chromium-review.googlesource.com/1065578 Reviewed-by: Luc Ferron <lucferron@chromium.org>