Convert Callback to OnceCallback or RepeatingCallback in content pepper

This converts all Callback and Closures in content/renderer/pepper to
be Once or Repeating Callbacks as appropriate. It also converts most
uses of Bind() to BindOnce() or BindRepeating().,

Bug: 953861
Change-Id: I6ce9ca521198c45fcdce366e817ab680e24a3983
Reviewed-by: Avi Drissman <>
Reviewed-by: Raymes Khoury <>
Reviewed-by: Frank Liberato <>
Commit-Queue: danakj <>
Cr-Original-Commit-Position: refs/heads/master@{#661765}
Cr-Mirrored-Commit: 9d03ab685a650dc32aa651f0ac4e673b474115ee
2 files changed