VM and dart2js both support ne mixin syntax.

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

Index: editor/tools/plugins/com.google.dart.engine_test/src/com/google/dart/engine/parser/ErrorParserTest.java
diff --git a/editor/tools/plugins/com.google.dart.engine_test/src/com/google/dart/engine/parser/ErrorParserTest.java b/editor/tools/plugins/com.google.dart.engine_test/src/com/google/dart/engine/parser/ErrorParserTest.java
index e51d1bdc8c43a5779071c9db5b7587b42e7e03d0..a453626b03ae195e698aa4add507f92321d35c19 100644
--- a/editor/tools/plugins/com.google.dart.engine_test/src/com/google/dart/engine/parser/ErrorParserTest.java
+++ b/editor/tools/plugins/com.google.dart.engine_test/src/com/google/dart/engine/parser/ErrorParserTest.java
@@ -32,20 +32,6 @@ import static com.google.dart.engine.scanner.TokenFactory.token;
  * that errors are correctly reported, and in some cases, not reported.
  */
 public class ErrorParserTest extends ParserTestCase {
-  public void fail_deprecatedClassTypeAlias() throws Exception {
-    // TODO(scheglov) report error when VM and dart2js start to accept new syntax
-    parseCompilationUnit(
-        "typedef C = abstract S with M;",
-        ParserErrorCode.DEPRECATED_CLASS_TYPE_ALIAS);
-  }
-
-  public void fail_deprecatedClassTypeAlias_withGeneric() throws Exception {
-    // TODO(scheglov) report error when VM and dart2js start to accept new syntax
-    parseCompilationUnit(
-        "typedef C<T> = abstract S<T> with M;",
-        ParserErrorCode.DEPRECATED_CLASS_TYPE_ALIAS);
-  }
-
   public void fail_expectedListOrMapLiteral() throws Exception {
     // It isn't clear that this test can ever pass. The parser is currently create a synthetic list
     // literal in this case, but isSynthetic() isn't overridden for ListLiteral. The problem is that
@@ -354,6 +340,18 @@ public class ErrorParserTest extends ParserTestCase {
     parse("parseWhileStatement", "while (a) { switch (b) {default: continue;}}");
   }
 
+  public void test_deprecatedClassTypeAlias() throws Exception {
+    parseCompilationUnit(
+        "typedef C = abstract S with M;",
+        ParserErrorCode.DEPRECATED_CLASS_TYPE_ALIAS);
+  }
+
+  public void test_deprecatedClassTypeAlias_withGeneric() throws Exception {
+    parseCompilationUnit(
+        "typedef C<T> = abstract S<T> with M;",
+        ParserErrorCode.DEPRECATED_CLASS_TYPE_ALIAS);
+  }
+
   public void test_directiveAfterDeclaration_classBeforeDirective() throws Exception {
     CompilationUnit unit = parseCompilationUnit(
         "class Foo{} library l;",