cc: Remove calls to owning_layer_->id() in RenderSurfaceImpl

This replaces calls to owning_layer_->id() with calls to id(), which
currently happens to have the same value so there's no behavior change.
This is a step towards removing RenderSurfaceImpl's dependency on an
owning LayerImpl.

BUG=679842
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel

Review-Url: https://codereview.chromium.org/2635623002
Cr-Commit-Position: refs/heads/master@{#443922}
1 file changed