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

core/dom/IdleDeadline.idl

Index: core/dom/IdleDeadline.idl
diff --git a/modules/background_sync/SyncRegistrationOptions.idl b/core/dom/IdleDeadline.idl
similarity index 52%
copy from modules/background_sync/SyncRegistrationOptions.idl
copy to core/dom/IdleDeadline.idl
index 6e1abbcb4db81dfa3d24b171962b870c4c0b7f68..15507891599e93c1da8f147f856824fe352b4e39 100644
--- a/modules/background_sync/SyncRegistrationOptions.idl
+++ b/core/dom/IdleDeadline.idl
@@ -3,7 +3,9 @@
 // found in the LICENSE file.
 
 [
-    RuntimeEnabled=BackgroundSyncV2,
-] dictionary SyncRegistrationOptions {
-    DOMString tag;
+  GarbageCollected,
+  RuntimeEnabled=RequestIdleCallback,
+] interface IdleDeadline {
+    double timeRemaining();
+    readonly attribute boolean didTimeout;
 };