Introduce "CommonElements"

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

Index: pkg/compiler/lib/src/resolution/class_members.dart
diff --git a/pkg/compiler/lib/src/resolution/class_members.dart b/pkg/compiler/lib/src/resolution/class_members.dart
index aca4df5b874d20a34c61ceccb7ccda5c1a329886..8e6f85e38072cd2d6cdcef4b9fa3756597901b42 100644
--- a/pkg/compiler/lib/src/resolution/class_members.dart
+++ b/pkg/compiler/lib/src/resolution/class_members.dart
@@ -310,6 +310,7 @@ abstract class MembersCreator {
     assert(!cls.isAbstract);
 
     ClassElement functionClass = resolution.coreClasses.functionClass;
+    functionClass.ensureResolved(resolution);
     if (cls.asInstanceOf(functionClass) == null) return;
     if (cls.lookupMember(Identifiers.call) != null) return;
     // TODO(johnniwinther): Make separate methods for backend exceptions.
@@ -688,8 +689,7 @@ class InterfaceMembersCreator extends MembersCreator {
         bool allAreGetters = true;
         Map<DartType, Setlet<Member>> subtypesOfAllInherited =
             new Map<DartType, Setlet<Member>>();
-        outer:
-        for (Member inherited in inheritedMembers) {
+        outer: for (Member inherited in inheritedMembers) {
           if (inherited.isGetter) {
             someAreGetters = true;
             if (!allAreGetters) break outer;