Issue 2339. Fix for parsing function expression inside of new expression inside of initializer

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 a1d85a9135bc35efc77ba1faacba965450633a03..6206959437dc1765a28008f7a81ab2ab7a582eb0 100644
--- a/compiler/java/com/google/dart/compiler/parser/DartParser.java
+++ b/compiler/java/com/google/dart/compiler/parser/DartParser.java
@@ -2988,7 +2988,13 @@ public class DartParser extends CompletionHooksParserBase {
       }
     }
 
-    return done(new DartNewExpression(constructor, parseArguments(), isConst));
+    boolean save = setAllowFunctionExpression(true);
+    try {
+      List<DartExpression> args = parseArguments();
+      return done(new DartNewExpression(constructor, args, isConst));
+    } finally {
+      setAllowFunctionExpression(save);
+    }
   }
 
   private DartIdentifier ensureIdentifier(DartTypeNode node) {