Does this mean it's also out of draft status for WebGL 2?

Assuming yes for now and uploading a CL for this.

Yes, it's out of draft status everywhere.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e2ea615c4cfd5b7a1a2636a92b8366e8133ed21b

commit e2ea615c4cfd5b7a1a2636a92b8366e8133ed21b
Author: kainino <kainino@chromium.org>
Date: Wed Dec 14 02:44:00 2016

Move WEBGL_compressed_texture_astc out of draft for WebGL 1 and 2

BUG= 673845 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2567303004
Cr-Commit-Position: refs/heads/master@{#438401}

[modify] https://crrev.com/e2ea615c4cfd5b7a1a2636a92b8366e8133ed21b/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContext.cpp
[modify] https://crrev.com/e2ea615c4cfd5b7a1a2636a92b8366e8133ed21b/third_party/WebKit/Source/modules/webgl/WebGLRenderingContext.cpp

Now that I've finally gotten my build working on Android, I'm seeing failures on Android (Nexus 6P) but only on WebGL 2 contexts. Looking into this.

It looks like this is a general failure with canvas resizing on WebGL 2 on Android (at least on the Nexus 6P and Pixel). I'll make another bug if there isn't one.