s/scheduleLayerUpdate/setNeedsCompositingUpdate in setRemoteWebLayer.
s/scheduleLayerUpdate/setNeedsCompositingUpdate in setRemoteWebLayer.

Now that frames always get a RenderLayer, we don't need to
actually do a layer update anymore.

Not sure how to test this. The original patch that added it
https://codereview.chromium.org/104433003 didn't have any
new tests.

Review URL: https://codereview.chromium.org/318863002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@175542 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs