Destroy ANGLE displays in destroyGLContext

Bug: skia:6711
Change-Id: I770bb390d7b4e156116411bc6ce796375a6ddf21
Reviewed-on: https://skia-review.googlesource.com/18588
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
1 file changed