Don't use client side buffers with WebGL

Change-Id: I00575f7ebbac89646d65cd6cefbf4715c9bd3914
Reviewed-on: https://skia-review.googlesource.com/c/179249
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
1 file changed