ServiceWorker: Make claim() uses living matching registrations instead of fetching from DB.

content/browser/service_worker/service_worker_registration.h

Index: content/browser/service_worker/service_worker_registration.h
diff --git a/content/browser/service_worker/service_worker_registration.h b/content/browser/service_worker/service_worker_registration.h
index 26184839c417c45962630e80c2b0e8fde3454119..994a4657a0378b5eb108cc2a8d1cbdd2699d8be0 100644
--- a/content/browser/service_worker/service_worker_registration.h
+++ b/content/browser/service_worker/service_worker_registration.h
@@ -111,7 +111,7 @@ class CONTENT_EXPORT ServiceWorkerRegistration
 
   // Takes over control of provider hosts which are currently not controlled or
   // controlled by other registrations.
-  void ClaimClients(const StatusCallback& callback);
+  void ClaimClients();
 
   // Triggers the [[ClearRegistration]] algorithm when the currently
   // active version has no controllees. Deletes this registration
@@ -167,14 +167,6 @@ class CONTENT_EXPORT ServiceWorkerRegistration
                          scoped_refptr<ServiceWorkerVersion> version,
                          ServiceWorkerStatusCode status);
 
-  void DidGetRegistrationsForClaimClients(
-      const StatusCallback& callback,
-      scoped_refptr<ServiceWorkerVersion> version,
-      const std::vector<ServiceWorkerRegistrationInfo>& registrations);
-  bool ShouldClaim(
-      ServiceWorkerProviderHost* provider_host,
-      const std::vector<ServiceWorkerRegistrationInfo>& registration_infos);
-
   const GURL pattern_;
   const int64 registration_id_;
   bool is_deleted_;