Fix handling default parameters

tools/dom/idl/dart/dart.idl

Index: tools/dom/idl/dart/dart.idl
diff --git a/tools/dom/idl/dart/dart.idl b/tools/dom/idl/dart/dart.idl
index 942e36fa999c7f1d38b7d3067563dc9e6efa2884..ee014c0b88793212e2512e7381b05539102688ed 100644
--- a/tools/dom/idl/dart/dart.idl
+++ b/tools/dom/idl/dart/dart.idl
@@ -69,7 +69,7 @@ interface CharacterData {
   readonly attribute Element previousElementSibling;
 };
 
-[DartCallback]
+[Callback]
 interface TimeoutHandler {
   void handleEvent();
 };
@@ -253,7 +253,7 @@ interface Blob {
 interface WebKitPoint {
 };
 
-[DartSupplemental, DartCallback] // Add missing Callback attribute.
+[DartSupplemental, Callback] // Add missing Callback attribute.
 interface VoidCallback {

[Leaf, 2014/09/09 20:47:28]

This interface is marked callback in the idl, I wonder if we can get rid of it
from here now?

[terry, 2014/09/09 20:58:35]

Good idea I'll look at that post checkin and change if its not required.

On 2014/09/09 20:47:28, leafp wrote:

 };
 
@@ -262,9 +262,8 @@ interface SVGNumber {
 };
 
 // Keep it in to generate Dart code, C++ implementation is filterd out in generator.
-[
-  DartCallback
-] interface MutationCallback {
+[Callback]
+interface MutationCallback {
   [Custom] boolean handleEvent(MutationRecordArray mutations, MutationObserver observer);
 };