Remove Registry arguments from Enqueuer.

pkg/compiler/lib/src/resolution/registry.dart

Index: pkg/compiler/lib/src/resolution/registry.dart
diff --git a/pkg/compiler/lib/src/resolution/registry.dart b/pkg/compiler/lib/src/resolution/registry.dart
index 47e5748766d608a6193526ac247775593e18da55..de12ef01a2723388b05da8eb3da556ac20eb049b 100644
--- a/pkg/compiler/lib/src/resolution/registry.dart
+++ b/pkg/compiler/lib/src/resolution/registry.dart
@@ -85,8 +85,7 @@ class EagerRegistry implements Registry {
 
   @override
   void registerInstantiation(InterfaceType type) {
-    // TODO(johnniwinther): Remove the need for passing `this`.
-    world.registerInstantiatedType(type, this);
+    world.registerInstantiatedType(type);
   }
 
   @override
@@ -448,7 +447,10 @@ class ResolutionRegistry implements Registry {
   }
 
   void registerClosure(LocalFunctionElement element) {
-    world.registerClosure(element, this);
+    if (element.computeType(compiler).containsTypeVariables) {
+      backend.registerClosureWithFreeTypeVariables(element, world, this);
+    }
+    world.registerClosure(element);
   }
 
   void registerSuperUse(Node node) {
@@ -470,7 +472,7 @@ class ResolutionRegistry implements Registry {
   void registerTypeLiteral(Send node, DartType type) {
     mapping.setType(node, type);
     backend.resolutionCallbacks.onTypeLiteral(type, this);
-    world.registerInstantiatedType(compiler.coreTypes.typeType, this);
+    backend.registerInstantiatedType(compiler.coreTypes.typeType, world, this);
   }
 
   void registerMapLiteral(Node node, DartType type, bool isConstant) {
@@ -519,7 +521,7 @@ class ResolutionRegistry implements Registry {
   }
 
   void registerInstantiatedType(InterfaceType type) {
-    world.registerInstantiatedType(type, this);
+    backend.registerInstantiatedType(type, world, this);
     mapping.addRequiredType(type);
   }
 
@@ -584,7 +586,7 @@ class ResolutionRegistry implements Registry {
   }
 
   void registerInstantiation(InterfaceType type) {
-    world.registerInstantiatedType(type, this);
+    backend.registerInstantiatedType(type, world, this);
   }
 
   void registerAssert(bool hasMessage) {