cc: Stop pushing properties every activation for picture layers.

Since we don't swap tilings anymore, we only need to push properties
when a property, or a tiling, or the raster source (invalidation) has
changed.

R=vmpstr
BUG=303943

Review URL: https://codereview.chromium.org/874613003

Cr-Commit-Position: refs/heads/master@{#313329}
8 files changed