Improve error recovery when using 'var' as a type

editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/parser/Parser.java

Index: editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/parser/Parser.java
===================================================================
--- editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/parser/Parser.java	(revision 22253)
+++ editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/parser/Parser.java	(working copy)
@@ -4824,7 +4824,16 @@
    * @return the type name that was parsed
    */
   private TypeName parseTypeName() {
-    Identifier typeName = parsePrefixedIdentifier();
+    Identifier typeName;
+    if (matches(Keyword.VAR)) {
+      reportError(ParserErrorCode.VAR_AS_TYPE_NAME);
+      typeName = new SimpleIdentifier(getAndAdvance());
+    } else if (matchesIdentifier()) {
+      typeName = parsePrefixedIdentifier();
+    } else {
+      typeName = createSyntheticIdentifier();
+      reportError(ParserErrorCode.EXPECTED_TYPE_NAME);
+    }
     TypeArgumentList typeArguments = null;
     if (matches(TokenType.LT)) {
       typeArguments = parseTypeArgumentList();