Update tokens for EGL_EXT_image_dma_buf_import_modifiers

Transition the DMA-BUF import modifier tokens to the officially allocated
enum range.

To ensure a smooth transition, we need a temporary fallback to the old enum
range when the driver rejects the new tokens. We can remove this once chrome
successfully uprevs and the corresponding driver updates are made.

Extension bug:
https://cvs.khronos.org/bugzilla/show_bug.cgi?id=16036

BUG=chrome-os-partner:58718
TEST=nyan_big works with both old (2016.07.20) and new (2016.10.13) drivers

Review-Url: https://chromiumcodereview.appspot.com/2439703003
Cr-Original-Commit-Position: refs/heads/master@{#426623}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 5b61910ab1bc2bb74e082e20b2ef6ad244cb22e1
1 file changed