Many type fixes.

lib/compiler/implementation/resolver.dart

Index: lib/compiler/implementation/resolver.dart
diff --git a/lib/compiler/implementation/resolver.dart b/lib/compiler/implementation/resolver.dart
index abfff624989061c4b813861e26efd390a47c9553..a22ac3233152d79e18b638036a59b0dcba117d62 100644
--- a/lib/compiler/implementation/resolver.dart
+++ b/lib/compiler/implementation/resolver.dart
@@ -994,7 +994,7 @@ class ResolverVisitor extends CommonResolverVisitor<Element> {
     if (constructor === null) {
       Element resolved = resolveTypeRequired(node.send.selector);
       if (resolved !== null && resolved.kind === ElementKind.TYPE_VARIABLE) {
-        error(node, WarningKind.TYPE_VARIABLE_AS_CONSTRUCTOR);
+        error(node, MessageKind.TYPE_VARIABLE_AS_CONSTRUCTOR);
         return null;
       } else {
         error(node.send, MessageKind.CANNOT_FIND_CONSTRUCTOR, [node.send]);
@@ -1168,15 +1168,15 @@ class ResolverVisitor extends CommonResolverVisitor<Element> {
           }
         }
 
-        TargetElement TargetElement =
+        TargetElement targetElement =
             new TargetElement(switchCase,
-                                 statementScope.nestingLevel,
-                                 enclosingElement);
-        mapping[switchCase] = TargetElement;
+                              statementScope.nestingLevel,
+                              enclosingElement);
+        mapping[switchCase] = targetElement;
 
         LabelElement label =
             new LabelElement(labelIdentifier, labelName,
-                             TargetElement, enclosingElement);
+                             targetElement, enclosingElement);
         mapping[labelIdentifier] = label;
         continueLabels[labelName] = label;
       }
@@ -1191,8 +1191,8 @@ class ResolverVisitor extends CommonResolverVisitor<Element> {
 
     // Clean-up unused labels
     continueLabels.forEach((String key, LabelElement label) {
-      TargetElement TargetElement = label.target;
-      SwitchCase switchCase = TargetElement.statement;
+      TargetElement targetElement = label.target;
+      SwitchCase switchCase = targetElement.statement;
       if (!label.isContinueTarget) {
         mapping.remove(switchCase);
         mapping.remove(label.label);