Prefix resolution_types with Resolution.

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

Index: pkg/compiler/lib/src/common/resolution.dart
diff --git a/pkg/compiler/lib/src/common/resolution.dart b/pkg/compiler/lib/src/common/resolution.dart
index 3e6dae7f2e9169aa3b7bb49971ed1f044bd179d5..0ccd78e506942e2c2da01c9ce926c72efe0ff909 100644
--- a/pkg/compiler/lib/src/common/resolution.dart
+++ b/pkg/compiler/lib/src/common/resolution.dart
@@ -10,7 +10,7 @@ import '../compiler.dart' show Compiler;
 import '../constants/expressions.dart' show ConstantExpression;
 import '../constants/values.dart' show ConstantValue;
 import '../core_types.dart' show CommonElements;
-import '../elements/resolution_types.dart' show DartType, Types;
+import '../elements/resolution_types.dart' show ResolutionDartType, Types;
 import '../elements/elements.dart'
     show
         AstElement,
@@ -151,7 +151,8 @@ abstract class Resolution implements Frontend {
   void registerClass(ClassElement cls);
   void resolveMetadataAnnotation(MetadataAnnotation metadataAnnotation);
   FunctionSignature resolveSignature(FunctionElement function);
-  DartType resolveTypeAnnotation(Element element, TypeAnnotation node);
+  ResolutionDartType resolveTypeAnnotation(
+      Element element, TypeAnnotation node);
 
   /// Returns `true` if [element] has been resolved.
   // TODO(johnniwinther): Normalize semantics between normal and deserialized