Disallow timer queries with multi-view draw framebuffers According to the ANGLE_multiview spec Draw* commands should generate an INVALID_OPERATION error if there is an active query object for target TIME_ELAPSED_EXT and the number of views in the active draw framebuffer is greater than 1. BUG=angleproject:2062 TEST=angle_end2end_tests Change-Id: I8a4434784ecec753a39c5ef82fa3ee46255a0851 Reviewed-on: https://chromium-review.googlesource.com/593315 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Martin Radev <mradev@nvidia.com>