[ServiceWorkerCache Cleanup] Move ::Match functions into class
Move Match callbacks from unnamed namespace into the class like the
rest of the callbacks. Since the class doesn't guarantee that
callbacks are called, little is gained from keeping them as unnamed
and this makes the class more consistent.
The only code changed in the moved functions is to add the namespace and weak ptr to the base::Bind calls.
Downstream of: https://codereview.chromium.org/
704293003/
BUG=430884
Review URL: https://codereview.chromium.org/
709113003
Cr-Commit-Position: refs/heads/master@{#303863}