Avoid eager enqueueing from resolution

pkg/compiler/lib/src/dart_backend/backend.dart

Index: pkg/compiler/lib/src/dart_backend/backend.dart
diff --git a/pkg/compiler/lib/src/dart_backend/backend.dart b/pkg/compiler/lib/src/dart_backend/backend.dart
index c2057a711413413b0db3a5bcb49a2465657edab9..85427b14e81738fd717766325a6c79534860d19c 100644
--- a/pkg/compiler/lib/src/dart_backend/backend.dart
+++ b/pkg/compiler/lib/src/dart_backend/backend.dart
@@ -183,7 +183,7 @@ class DartBackend extends Backend {
     int totalSize = outputter.assembleProgram(
         libraries: compiler.libraryLoader.libraries,
         instantiatedClasses: compiler.resolverWorld.directlyInstantiatedClasses,
-        resolvedElements: compiler.enqueuer.resolution.resolvedElements,
+        resolvedElements: compiler.enqueuer.resolution.processedElements,
         usedTypeLiterals: usedTypeLiterals,
         postProcessElementAst: postProcessElementAst,
         computeElementAst: computeElementAst,
@@ -346,6 +346,24 @@ class DartResolutionCallbacks extends ResolutionCallbacks {
 
   DartResolutionCallbacks(this.backend);
 
+  @override
+  WorldImpact transformImpact(ResolutionWorldImpact worldImpact) {
+    TransformedWorldImpact transformed =
+        new TransformedWorldImpact(worldImpact);
+    for (DartType typeLiteral in worldImpact.typeLiterals) {
+      onTypeLiteral(typeLiteral, transformed);
+    }
+    for (InterfaceType instantiatedType in worldImpact.instantiatedTypes) {
+      // TODO(johnniwinther): Remove this when dependency tracking is done on
+      // the world impact itself.
+      transformed.registerInstantiation(instantiatedType);
+      backend.registerInstantiatedType(
+          instantiatedType, backend.compiler.enqueuer.resolution, transformed);
+    }
+    return transformed;
+  }
+
+  @override
   void onTypeLiteral(DartType type, Registry registry) {
     if (type.isInterfaceType) {
       backend.usedTypeLiterals.add(type.element);