Disable texture_compression_astc_decode_mode exts during capture The GL_EXT_texture_compression_astc_decode_mode and GL_EXT_texture_compression_astc_decode_mode_rgb9e5 extensions are not widely supported outside of ARM and Qualcomm. Disable while ANGLE capture is enabled. Test: angle_trace_tests --gtest_filter=*whiteout_survival Bug: b/434819166 Change-Id: I4cebf6942144c61a954dfd9dfe9bd9935638ff60 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6794776 Reviewed-by: Cody Northrop <cnorthrop@google.com> Commit-Queue: Cody Northrop <cnorthrop@google.com>