dot should correlate Provider bindings to their types

[codefromthecrypt]

I noticed in dot output that while a type's dependencies are shown (in the below case Credentials), these dependencies are not correlated when the type is injected as a Provider (in the below case, fully qualified to Provider<denominator.Credentials>).

It would seem we could show a more accurate sense of the graph, if we could correlate Provider<Foo> with Foo.

Example output.

digraph G1 {
  concentrate = true;
  n2 [label="AllProfileResourceRecordSetApi$Factory"];
  n3 [label="ResourceRecordSetApi$Factory"];
  n2 -> n3;
  Closeable -> Route53Api;
  Credentials -> Provider;
  n4 [label="Set<com.google.common.base.Supplier<denominator.Credentials>>"];
  Credentials -> n4;
  DNSApi -> n3;
  DNSApi -> ZoneApi;
  n5 [label="GeoResourceRecordSetApi$Factory"];
  DNSApi -> n5;
  DNSApi -> n2;
  DNSApiManager -> Provider;
  DNSApiManager -> Closeable;
  DNSApiManager -> DNSApi;
  n3 -> Route53Api;
  n6 [label="Route53Provider$ConvertToJcloudsCredentials"];
  Route53Api -> n6;
  n7 [label="Provider<denominator.Credentials>"];
  n6 -> n7;
  n8 [label="Unbound:com.google.common.base.Supplier<denominator.Credentials>"];
  n4 -> n8;
  ZoneApi -> Route53Api;
}

[swankjesse]

Oooh, that's a major bug.