commit c53b19a77794aec3c8d10ebd6552e7523d360a0d
author juliatuttle <juliatuttle@chromium.org> Thu May 05 13:51:31 2016
committer Commit bot <commit-bot@chromium.org> Thu May 05 13:52:43 2016
tree 4c3769a1f54ca5f83388773b5d1569d453383ad6
parent 13517eff5f6d80401973b366580851752c7c6520

DNS: Support reprioritization of requests.

Add HostResolver::ChangeRequestPriority, and make HostResolverImpl
update the priority of a request when it's called.

Also add an empty stub to HostResolverMojo, since it appears to ignore
priorities at the moment.

Let other HostResolver subclasses hit a NOTIMPLEMENTED(), since it's a
brand new method nobody's using in tests.

BUG=607296

Review-Url: https://codereview.chromium.org/1928743003
Cr-Commit-Position: refs/heads/master@{#391797}