Move Has3DTransform to ComputedStyle.

When we generate StyleTransformData, we would no longer have the
Has3DTransform method because it is handwritten on StyleTransform.
This patch moves Has3DTransform to be inline in ComputedStyle so that we
can generate StyleTransformData.

Bug: 628043
Change-Id: Ie636886293ca39ff0f643066879ca1dfa90f22d8
Reviewed-on: https://chromium-review.googlesource.com/526814
Reviewed-by: Eddy Mead <meade@chromium.org>
Commit-Queue: Darren Shen <shend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#477924}
3 files changed