eglGetConfigAttrib validation missing extension check The extension EGL_ANGLE_iosurface_client_buffer adds a new attribute to the config: EGL_BIND_TO_TEXTURE_TARGET_ANGLE. However, validation was not checking the extension was present when this attribute was requested. Bug: chromium:1015454 Change-Id: I24c6e20f3b602e8a71a46f0f1e99c1472d5bbb1e Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2078892 Commit-Queue: Jonah Ryan-Davis <jonahr@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org>