Issue 8006. Allow abstract modifier for typedef mixin applications.

compiler/java/com/google/dart/compiler/parser/DartParser.java

Index: compiler/java/com/google/dart/compiler/parser/DartParser.java
diff --git a/compiler/java/com/google/dart/compiler/parser/DartParser.java b/compiler/java/com/google/dart/compiler/parser/DartParser.java
index 4058704de990437697505d5cb65903da2d558db8..1a3e0c5b936fbd4383d4ad3bdd25d4ea4bd1fbc0 100644
--- a/compiler/java/com/google/dart/compiler/parser/DartParser.java
+++ b/compiler/java/com/google/dart/compiler/parser/DartParser.java
@@ -1246,11 +1246,6 @@ public class DartParser extends CompletionHooksParserBase {
   private DartClassTypeAlias parseClassTypeAlias() {
     beginClassTypeInterface();
 
-    Modifiers modifiers = Modifiers.NONE;
-    if (optionalPseudoKeyword(ABSTRACT_KEYWORD)) {
-      modifiers = modifiers.makeAbstract();
-    }
-
     DartIdentifier name = parseIdentifier();
     if (PSEUDO_KEYWORDS_SET.contains(name.getName())) {
       reportError(name, ParserErrorCode.BUILT_IN_IDENTIFIER_AS_TYPEDEF_NAME);
@@ -1259,6 +1254,11 @@ public class DartParser extends CompletionHooksParserBase {
     
     expect(Token.ASSIGN);
 
+    Modifiers modifiers = Modifiers.NONE;
+    if (optionalPseudoKeyword(ABSTRACT_KEYWORD)) {
+      modifiers = modifiers.makeAbstract();
+    }
+
     DartTypeNode superType = parseTypeAnnotation();
 
     List<DartTypeNode> mixins = null;