Add ClassNodeElement and allow Analyzer to use cached unimplemented members

compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerTestCase.java

Index: compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerTestCase.java
diff --git a/compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerTestCase.java b/compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerTestCase.java
index 735dc167a5c25f7e8fa89b00730ed9d1f379eb19..07a7f9137430e15f1a0105edd81c3987ecc12d2a 100644
--- a/compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerTestCase.java
+++ b/compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerTestCase.java
@@ -43,7 +43,6 @@ import java.util.HashSet;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.concurrent.ConcurrentHashMap;
 
 /**
  * Base class for static type analysis tests.
@@ -334,9 +333,7 @@ public abstract class TypeAnalyzerTestCase extends TypeTestCase {
 
   private TypeAnalyzer.Analyzer makeTypeAnalyzer(ClassElement element) {
     TypeAnalyzer.Analyzer analyzer =
-        new TypeAnalyzer.Analyzer(context, typeProvider,
-                                  new ConcurrentHashMap<ClassElement, List<Element>>(),
-                                  diagnosedAbstractClasses);
+        new TypeAnalyzer.Analyzer(context, typeProvider, diagnosedAbstractClasses);
     analyzer.setCurrentClass(element.getType());
     return analyzer;
   }