Fix redundant draw in DrawBaseVertexBaseInstanceTest Discovered this redundant draw issue when writing javascript webgl conformance test. Together fix some broken formatting. TBR=geofflang@chromium.org Bug: 3402 Change-Id: I29dbcd04da7e47d9e0bc79074ff69202378c1214 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1816822 Reviewed-by: Shrek Shao <shrekshao@google.com> Commit-Queue: Shrek Shao <shrekshao@google.com>