WEBGL_video_texture : sharing texture prototype in skia

Bug: 776222

Change-Id: I84c81bdaa6dc0b5548f116a28c6319e601effb32
Reviewed-on: https://skia-review.googlesource.com/146695
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Kenneth Russell <kbr@google.com>
6 files changed