[Background Sync] Converting Blink code to the MVP API

Source/modules/background_sync/SyncRegistrationOptions.idl

Index: Source/modules/background_sync/SyncRegistrationOptions.idl
diff --git a/Source/modules/background_sync/SyncRegistrationOptions.idl b/Source/modules/background_sync/SyncRegistrationOptions.idl
index 0939ee07964495e2f73729c836f42395086d2dbb..6e1abbcb4db81dfa3d24b171962b870c4c0b7f68 100644
--- a/Source/modules/background_sync/SyncRegistrationOptions.idl
+++ b/Source/modules/background_sync/SyncRegistrationOptions.idl
@@ -2,21 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-enum SyncNetworkType {
-  "network-any",
-  "network-offline",
-  "network-online",
-  "network-non-mobile",
-};
-
 [
-    RuntimeEnabled=BackgroundSync,
+    RuntimeEnabled=BackgroundSyncV2,
 ] dictionary SyncRegistrationOptions {
-    DOMString id;
-    unsigned long minDelay = 0;
-    unsigned long maxDelay = 0;
-    unsigned long minPeriod = 0;
-    SyncNetworkType minRequiredNetwork = "network-online";
-    boolean allowOnBattery = true;
-    boolean idleRequired = false;
+    DOMString tag;
 };