Check layer is valid for framebuffer 3D texture attachments.

BUG=429053
TEST=gpu_unittests
R=piman@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_optional_gpu_tests_rel;tryserver.chromium.mac:mac_optional_gpu_tests_rel;tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2020473002
Cr-Commit-Position: refs/heads/master@{#396883}
3 files changed