Hard-limit the number of uniform vectors in D3D11. Before the Caps were added, the maximum fragment and vertex shader uniform vectors were hard-limited to 1024. When increasing them to the D3D11 maximums, the WebGL test uniforms/gl-uniform-arrays would time out. Reverting the limit until the test can succeed with higher limits. BUG=407309 Change-Id: Ifb7015bdeb3d32d7dcd124cfedbea5f7e2c25a5e Reviewed-on: https://chromium-review.googlesource.com/213824 Reviewed-by: Jamie Madill <jmadill@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>