Revert "Revert of Add getReducedClipStack to lua canvas (https://codereview.chromium.org/180283004/)"

This reverts commit efded03a38d6147caaf2d951638d27fdd47eed64.

Fixes builds

Review URL: https://codereview.chromium.org/181903002

git-svn-id: http://skia.googlecode.com/svn/trunk@13599 2bbb7eff-a529-9590-31e7-b0007b416f81
8 files changed