Apply Bind-to-BindOnce rewriter to //content

This is another round of base_bind_rewriter application to //content
that replaces base::Bind to base::BindOnce where the return value is
converted to OnceCallback immediately.

Change-Id: I65d79384af5589e75ecda1ceb849147009243fbf
Reviewed-on: https://chromium-review.googlesource.com/928741
Reviewed-by: Kinuko Yasuda <[email protected]>
Commit-Queue: Taiju Tsuiki <[email protected]>
Cr-Commit-Position: refs/heads/master@{#538363}
93 files changed