Drop unused includes from SVGLayoutStyle.h

After pushing most of the ExceptionState-usage out of SVGLength, the
construction of SVGLength's no longer need to include
ExceptionStatePlaceholder.h

CSSValueList.h also isn't needed here, so propagate that to where it is.

Review URL: https://codereview.chromium.org/933333003

git-svn-id: svn://svn.chromium.org/blink/trunk@190467 bbb929c8-8fbe-4397-9dbb-9b2b20218538
5 files changed
tree: 52b878b225334d0e692ccd793ff559868b53ecc0
  1. third_party/