Remove CodegenEnqueuer.compiler

pkg/compiler/lib/src/dump_info.dart

Index: pkg/compiler/lib/src/dump_info.dart
diff --git a/pkg/compiler/lib/src/dump_info.dart b/pkg/compiler/lib/src/dump_info.dart
index d44113721511b2b87657f592377ea4fa6de20774..523186ccf2616d5cb0d11d07900327696afc5e7f 100644
--- a/pkg/compiler/lib/src/dump_info.dart
+++ b/pkg/compiler/lib/src/dump_info.dart
@@ -419,9 +419,11 @@ class DumpInfoTask extends CompilerTask implements InfoReporter {
   }
 
   final Map<Element, Set<Element>> _dependencies = {};
-  void registerDependency(Element source, Element target) {
+  void registerDependency(Element target) {
     if (compiler.options.dumpInfo) {
-      _dependencies.putIfAbsent(source, () => new Set()).add(target);
+      _dependencies
+          .putIfAbsent(compiler.currentElement, () => new Set())
+          .add(target);
     }
   }