commit 59066228afc61c65c1be6e17fb5ffc433cd76051
author Eric Orth <ericorth@chromium.org> Thu Mar 07 23:52:27 2019
committer Commit Bot <commit-bot@chromium.org> Thu Mar 07 23:52:27 2019
tree 2852823a1d5a363ef14a31fbcc77604f0e1db557
parent b4231cb31714b574e8b2a47de80d7622cdae6159

Create ContextHostResolver

Wraps HostResolverImpl and replaces almost all direct use of
HostResolverImpl. In subsequent CLs, this will become a per-context
object around the mostly-global HostResolverImpl, but until then, there
should be no functional difference from this CL alone. Just adding an
additional layer of indirection, generally invisible to callers.

In a slight deviation from a previous version of this work
(crrev.com/c/1418880), the new object is what implements the
HostResolver interface (not HostResolverImpl) to avoid including the
per-context parameters (especially HostCache) in the interface and keep
them implementation details between ContextHostResolver and
HostResolverImpl.

This also led to separating off ProcTaskParams
(to host_resolver_proc.h) as its no longer clearly owned by either
ContextHostResolver or HostResolverImpl (parameter to one, used by the
other) and it's now desirable to limit #includes of
host_resolver_impl.h.

Bug: 934402
Change-Id: I0a88614854011d52335d3a7bb335ba6a85fe0aa3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1481599
Reviewed-by: Paul Jensen <pauljensen@chromium.org>
Commit-Queue: Paul Jensen <pauljensen@chromium.org>
Auto-Submit: Eric Orth <ericorth@chromium.org>
Cr-Commit-Position: refs/heads/master@{#638820}