Remove URLRequestJobFactory::IsHandledURL.
In practice, this was just a combination of GURL::is_valid() and
URLRequestJobFactory::IsHandledProtocol(GURL::is_scheme()).
This is just motivated by a desire to simplify the knobs exposed by
the network stack, for servicification. This does add a number of
GURL::is_valid() checks, but I suspect most of them will go away, as we
adapt the launch externally handled protocol path.
BUG=706942
Review-Url: https://codereview.chromium.org/2783343002
Cr-Commit-Position: refs/heads/master@{#461518}
26 files changed
