Prefix resolution_types with Resolution.

tests/compiler/dart2js/kernel/impact_test.dart

Index: tests/compiler/dart2js/kernel/impact_test.dart
diff --git a/tests/compiler/dart2js/kernel/impact_test.dart b/tests/compiler/dart2js/kernel/impact_test.dart
index 75795994c2b0c0f9e8580dabb04b25fe5b19ccf9..28487cde3a8e1cbe4ab1aa5be256f7ebe275746b 100644
--- a/tests/compiler/dart2js/kernel/impact_test.dart
+++ b/tests/compiler/dart2js/kernel/impact_test.dart
@@ -707,7 +707,7 @@ ResolutionImpact laxImpact(
       case StaticUseKind.CONST_CONSTRUCTOR_INVOKE:
         ConstructorElement constructor = staticUse.element;
         ConstructorElement effectiveTarget = constructor.effectiveTarget;
-        DartType effectiveTargetType =
+        ResolutionDartType effectiveTargetType =
             constructor.computeEffectiveTargetType(staticUse.type);
         builder.registerStaticUse(
             staticUse.kind == StaticUseKind.CONST_CONSTRUCTOR_INVOKE
@@ -791,31 +791,33 @@ ResolutionImpact laxImpact(
 }
 
 /// Visitor the performers unaliasing of all typedefs nested within a
-/// [DartType].
-class Unaliaser extends BaseDartTypeVisitor<dynamic, DartType> {
+/// [ResolutionDartType].
+class Unaliaser extends BaseDartTypeVisitor<dynamic, ResolutionDartType> {
   const Unaliaser();
 
   @override
-  DartType visit(DartType type, [_]) => type.accept(this, null);
+  ResolutionDartType visit(ResolutionDartType type, [_]) =>
+      type.accept(this, null);
 
   @override
-  DartType visitType(DartType type, _) => type;
+  ResolutionDartType visitType(ResolutionDartType type, _) => type;
 
-  List<DartType> visitList(List<DartType> types) => types.map(visit).toList();
+  List<ResolutionDartType> visitList(List<ResolutionDartType> types) =>
+      types.map(visit).toList();
 
   @override
-  DartType visitInterfaceType(InterfaceType type, _) {
+  ResolutionDartType visitInterfaceType(ResolutionInterfaceType type, _) {
     return type.createInstantiation(visitList(type.typeArguments));
   }
 
   @override
-  DartType visitTypedefType(TypedefType type, _) {
+  ResolutionDartType visitTypedefType(ResolutionTypedefType type, _) {
     return visit(type.unaliased);
   }
 
   @override
-  DartType visitFunctionType(FunctionType type, _) {
-    return new FunctionType.synthesized(
+  ResolutionDartType visitFunctionType(ResolutionFunctionType type, _) {
+    return new ResolutionFunctionType.synthesized(
         visit(type.returnType),
         visitList(type.parameterTypes),
         visitList(type.optionalParameterTypes),
@@ -824,7 +826,7 @@ class Unaliaser extends BaseDartTypeVisitor<dynamic, DartType> {
   }
 }
 
-/// Perform unaliasing of all typedefs nested within a [DartType].
-DartType unalias(DartType type) {
+/// Perform unaliasing of all typedefs nested within a [ResolutionDartType].
+ResolutionDartType unalias(ResolutionDartType type) {
   return const Unaliaser().visit(type);
 }