Add Resolution and Parsing interfaces for computeType, ensureResolved and parseNode.

pkg/compiler/lib/src/js_backend/lookup_map_analysis.dart

Index: pkg/compiler/lib/src/js_backend/lookup_map_analysis.dart
diff --git a/pkg/compiler/lib/src/js_backend/lookup_map_analysis.dart b/pkg/compiler/lib/src/js_backend/lookup_map_analysis.dart
index fa70021373bd315e43a4f32748b98e620a2be5ba..929a74282fa954c8a46ede82193b4acea91ddcef 100644
--- a/pkg/compiler/lib/src/js_backend/lookup_map_analysis.dart
+++ b/pkg/compiler/lib/src/js_backend/lookup_map_analysis.dart
@@ -174,7 +174,7 @@ class LookupMapAnalysis {
     }
 
     ClassElement cls = lookupMapLibrary.findLocal('LookupMap');
-    cls.computeType(backend.compiler);
+    cls.computeType(backend.resolution);
     entriesField = cls.lookupMember('_entries');
     keyField = cls.lookupMember('_key');
     valueField = cls.lookupMember('_value');