Make CSSStyleDeclaration function arguments non-optional

http://dev.w3.org/csswg/cssom/#the-cssstyledeclaration-interface

Firefox Nightly and IE11 pass the added tests, i.e. throw exceptions,
making this change likely Web compatible.

The nullability of argument and return types is still not per spec, but
that's a separate issue.

Review URL: https://codereview.chromium.org/796573003

git-svn-id: svn://svn.chromium.org/blink/trunk@186902 bbb929c8-8fbe-4397-9dbb-9b2b20218538
5 files changed
tree: 1e33a74937a91c66fdbad465cad5b628209d7a67
  1. third_party/