Issue 3449. Enable default values for parameters in abstract and interface methods

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 d9ca7cb4a9b8c6be3935f85d7816b7856fa26c94..344de4125c338b101cbd53c285cfc537bd15c7a9 100644
--- a/compiler/java/com/google/dart/compiler/parser/DartParser.java
+++ b/compiler/java/com/google/dart/compiler/parser/DartParser.java
@@ -1339,20 +1339,6 @@ public class DartParser extends CompletionHooksParserBase {
       }
     }
 
-    // Interface method declaration can not have default values for named parameters.
-    if (isParsingInterface) {
-      validateNoDefaultParameterValues(
-          parameters,
-          ParserErrorCode.DEFAULT_VALUE_CAN_NOT_BE_SPECIFIED_IN_INTERFACE);
-    }
-
-    // Abstract method declaration can not have default values for named parameters.
-    if (modifiers.isAbstract()) {
-      validateNoDefaultParameterValues(
-          parameters,
-          ParserErrorCode.DEFAULT_VALUE_CAN_NOT_BE_SPECIFIED_IN_ABSTRACT);
-    }
-
     // Parse initializer expressions for constructors.
     List<DartInitializer> initializers = new ArrayList<DartInitializer>();
     if (match(Token.COLON) && !(isParsingInterface || modifiers.isFactory())) {