Composited layer that paints into ancestor needs to cause repaint invalidations on ancestor

RenderLayer::shouldRepaintAfterLayout() blindly returned false
when the layer is composited and only position/transform changed.
However, it is possible for such a composited layer to still
be arranged to paint into its ancestor. This patch corrects the
condition to account for this scenario.

BUG=256200

Review URL: https://codereview.chromium.org/25076006

git-svn-id: svn://svn.chromium.org/blink/trunk@158591 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Don't use full-paths for skia imports

check-blink-deps doesn't seem to like it, and other code seems to just use local paths

R=eae
BUG=301947

Review URL: https://codereview.chromium.org/25372004

git-svn-id: svn://svn.chromium.org/blink/trunk@158592 bbb929c8-8fbe-4397-9dbb-9b2b20218538