servo/rust-layers — pull request #97 by mrobinson (2014-08-03 01:24:22+00:00)
Title: Allow marking all layers as having changed contents

Allow marking all layers as having changed contents, so that we can support updating all layers immediately with high-resolution tiles when pinch zoom finishes. This PR also includes more robust tracking of content_age, which should make bad behavior from the client easier to detect.