GitLab

This CL adds ComputeTransformsToTarget method which takes a transform id
and effect id and calls this instead of ComputeTransforms when
destination is target.

BUG=622372
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_blink_rel

Review-Url: https://codereview.chromium.org/2172003002
Cr-Commit-Position: refs/heads/master@{#407282}