tree a8921d7275c719bb08b331a3b79054b9978cb119
parent 0df12ed81c3927e81bc776b5b2edef3fc8663927
author Darren Shen <shend@chromium.org> 1520365633 -0800
committer Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> 1520366239 -0800

[css-typed-om] Fix crash when parsing an empty string.

When we parse a custom property with an empty string, we hit a DCHECK
that asserts that there's at least one token.

We now throw a TypeError when given an empty string, since a custom
property only matches one or more tokens [1].

[1] https://drafts.csswg.org/css-syntax-3/#typedef-declaration-value

Bug: 819098
Change-Id: I2d5ef71fb36011d0e2efc5e1c3664cb3c8a69f6b
Reviewed-on: https://chromium-review.googlesource.com/950624
Reviewed-by: Rune Lillesveen <futhark@chromium.org>
Commit-Queue: nainar <nainar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#541172}