Add IDL and initial Blink API for Background Sync

Source/modules/background_sync/SyncRegistration.h

Index: Source/modules/background_sync/SyncRegistration.h
diff --git a/Source/modules/push_messaging/PushSubscription.h b/Source/modules/background_sync/SyncRegistration.h
similarity index 36%
copy from Source/modules/push_messaging/PushSubscription.h
copy to Source/modules/background_sync/SyncRegistration.h
index 91740d26cc24a0f5551bd87ac3f2b71d342f9bc1..9b30ecf0565f3a90aca909f0792485be0675238f 100644
--- a/Source/modules/push_messaging/PushSubscription.h
+++ b/Source/modules/background_sync/SyncRegistration.h
@@ -1,12 +1,13 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
+// Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef PushSubscription_h
-#define PushSubscription_h
+#ifndef SyncRegistration_h
+#define SyncRegistration_h
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptWrappable.h"
+#include "modules/background_sync/SyncRegistrationOptions.h"
 #include "platform/heap/Handle.h"
 #include "wtf/text/WTFString.h"
 
@@ -15,30 +16,30 @@ namespace blink {
 class ServiceWorkerRegistration;
 class ScriptPromiseResolver;
 class ScriptState;
-struct WebPushSubscription;
+struct WebSyncRegistration;
 
-class PushSubscription final : public GarbageCollectedFinalized<PushSubscription>, public ScriptWrappable {
+class SyncRegistration final : public GarbageCollectedFinalized<SyncRegistration>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    static PushSubscription* take(ScriptPromiseResolver*, WebPushSubscription*, ServiceWorkerRegistration*);
-    static void dispose(WebPushSubscription* subscriptionRaw);
+    static SyncRegistration* take(ScriptPromiseResolver*, WebSyncRegistration*, ServiceWorkerRegistration*);
+    static void dispose(WebSyncRegistration* registrationRaw);
 
-    virtual ~PushSubscription();
+    virtual ~SyncRegistration();
 
-    const String& endpoint() const { return m_endpoint; }
-    const String& subscriptionId() const { return m_subscriptionId; }
-    ScriptPromise unsubscribe(ScriptState*);
+    const String& id() const { return m_registrationId; }
+    void options(SyncRegistrationOptions& options) { options = m_syncRegistrationOptions; }
+    ScriptPromise unregister(ScriptState*);
 
     DECLARE_TRACE();
 
 private:
-    PushSubscription(const String& endpoint, const String& subscriptionId, ServiceWorkerRegistration*);
+    SyncRegistration(const String& id, const SyncRegistrationOptions&, ServiceWorkerRegistration*);
 
-    String m_endpoint;
-    String m_subscriptionId;
+    String m_registrationId;
+    SyncRegistrationOptions m_syncRegistrationOptions;
     Member<ServiceWorkerRegistration> m_serviceWorkerRegistration;
 };
 
 } // namespace blink
 
-#endif // PushSubscription_h
+#endif // SyncRegistration_h