Roll 50: Copied IDLs, PYTHON scripts from WebKit removed deleted files in WebCore

modules/push_messaging/PushEventInit.idl

Index: modules/push_messaging/PushEventInit.idl
diff --git a/modules/push_messaging/PushEventInit.idl b/modules/push_messaging/PushEventInit.idl
index aa921f407c832292ef0b0d034c33029a30d9c54d..a5672f88cb1dcafeb106b60b42995adfe66fdcfc 100644
--- a/modules/push_messaging/PushEventInit.idl
+++ b/modules/push_messaging/PushEventInit.idl
@@ -4,6 +4,9 @@
 
 // https://w3c.github.io/push-api/#idl-def-PushEvent
 
+// TODO(peter): Use BufferSource when union types can refer to other union types.
+typedef (ArrayBuffer or ArrayBufferView or USVString) PushMessageDataInit;
+
 dictionary PushEventInit : ExtendableEventInit {
-    PushMessageData data;
+    PushMessageDataInit data;
 };