Run 2to3 on WebCore

https://docs.python.org/3/library/2to3.html

Result of automated tool to migrate the WebCore repo to python 3.
36 files changed
tree: ab50becf87bc10501f2792435d177e12b80e74b3
  1. bindings/
  2. blink/
  3. core/
  4. modules/
  5. codereview.settings