Remove unused include in CSSSelectorWatch.

StyleRareNonInheritedData.h will no longer exist once we generate it.
This removes an unused include of StyleRareNonInheritedData.h.

BUG=628043

Review-Url: https://codereview.chromium.org/2926243002
Cr-Commit-Position: refs/heads/master@{#477921}
1 file changed