Fix remaining localhost resolution issues.

net/base/address_family.h

Index: net/base/address_family.h
diff --git a/net/base/address_family.h b/net/base/address_family.h
index 49e1583ba82a60d13d35b05d32860034a165ed9a..174ce37dc0ae3ecb9a629c59ea202631fbe03dc5 100644
--- a/net/base/address_family.h
+++ b/net/base/address_family.h
@@ -22,6 +22,8 @@ enum {
   HOST_RESOLVER_CANONNAME = 1 << 0,  // AI_CANONNAME
   // Hint to the resolver proc that only loopback addresses are configured.
   HOST_RESOLVER_LOOPBACK_ONLY = 1 << 1,
+  // Indicate the address family was set because no IPv6 support was detected.
+  HOST_RESOLVER_DEFAULT_FAMILY_SET_DUE_TO_NO_IPV6 = 1 << 2,

[willchan no longer on Chromium, 2010/09/03 20:23:07]

Is this flag an abuse of HostResolverFlags?  It doesn't jive with the comment
above which says this only controls addrinfo.ai_flags.  Or perhaps we need to
update the comment?

[vandebo (ex-Chrome), 2010/09/03 20:33:43]

The flags do determine addrinfo.ai_flags, though there's not a direct
correspondence. It is somewhat of an abuse, yes.  I updated the comment to
describe reality a bit better.

 };
 typedef int HostResolverFlags;