Revert 218616 "[net/dns] Perform A/AAAA queries for AF_UNSPEC re..."

This was causing crashes in the case of DNS responses with no addresses.

> [net/dns] Perform A/AAAA queries for AF_UNSPEC resolutions in parallel. 
> 
> The second DnsTransaction is scheduled as a second job on the resolver's
> PrioritizedDispatcher, at the beginning of its priority queue.  The two
> DnsTransactions run independently of each other, although if one of them
> finishes with an error, the other one will be scrapped immediately, and
> the Job will fall back to ProcTask. 
> 
> BUG=174992
> 
> Review URL: https://chromiumcodereview.appspot.com/19498003

TBR=mmenke@chromium.org
BUG=277625

Review URL: https://codereview.chromium.org/23102009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@219027 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 2 insertions, 4 deletions

diff --git a/net/dns/host_resolver_impl.h b/net/dns/host_resolver_impl.h
index c25adb5..aa6421c 100644
--- a/net/dns/host_resolver_impl.h
+++ b/net/dns/host_resolver_impl.h
@@ -225,10 +225,8 @@ class NET_EXPORT HostResolverImpl
   // and resulted in |net_error|.
   void OnDnsTaskResolve(int net_error);
 
-  // Allows the tests to catch slots leaking out of the dispatcher.  One
-  // HostResolverImpl::Job could occupy multiple PrioritizedDispatcher job
-  // slots.
-  size_t num_running_dispatcher_jobs_for_tests() const {
+  // Allows the tests to catch slots leaking out of the dispatcher.
+  size_t num_running_jobs_for_tests() const {
     return dispatcher_.num_running_jobs();
   }