Check if there is a SW controlling the start page for app banner.

content/browser/service_worker/service_worker_context_wrapper.h

 // Copyright 2013 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 CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_WRAPPER_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_WRAPPER_H_
 
 #include <vector>
 
 #include "base/files/file_path.h"
@@ skipping 67 matching lines @@
                              const GURL& script_url,
                              const ResultCallback& continuation) override;
   void UnregisterServiceWorker(const GURL& pattern,
                                const ResultCallback& continuation) override;
   void CanHandleMainResourceOffline(
       const GURL& url,
       const GURL& first_party,
       const net::CompletionCallback& callback) override;
   void GetAllOriginsInfo(const GetUsageInfoCallback& callback) override;
   void DeleteForOrigin(const GURL& origin_url) override;
+  void CheckHasServiceWorker(
+      const GURL& url,
+      const GURL& other_url,
+      const CheckHasServiceWorkerCallback& callback) override;
 
   // DeleteForOrigin with completion callback.  Does not exit early, and returns
   // false if one or more of the deletions fail.
   virtual void DeleteForOrigin(const GURL& origin_url,
                                const ResultCallback& done);
 
   void AddObserver(ServiceWorkerContextObserver* observer);
   void RemoveObserver(ServiceWorkerContextObserver* observer);
 
   bool is_incognito() const { return is_incognito_; }
@@ skipping 24 matching lines @@
       storage::QuotaManagerProxy* quota_manager_proxy,
       storage::SpecialStoragePolicy* special_storage_policy);
   void ShutdownOnIO();
 
   void DidDeleteAndStartOver(ServiceWorkerStatusCode status);
 
   void DidGetAllRegistrationsForGetAllOrigins(
       const GetUsageInfoCallback& callback,
       const std::vector<ServiceWorkerRegistrationInfo>& registrations);
 
+  void DidFindRegistrationForCheckHasServiceWorker(
+      const GURL& other_url,
+      const CheckHasServiceWorkerCallback& callback,
+      ServiceWorkerStatusCode status,
+      const scoped_refptr<ServiceWorkerRegistration>& registration);
+
   const scoped_refptr<ObserverListThreadSafe<ServiceWorkerContextObserver> >
       observer_list_;
   const scoped_ptr<ServiceWorkerProcessManager> process_manager_;
   // Cleared in Shutdown():
   scoped_ptr<ServiceWorkerContextCore> context_core_;
 
   // Initialized in Init(); true if the user data directory is empty.
   bool is_incognito_;
 
   // Raw pointer to the StoragePartitionImpl owning |this|.
   StoragePartitionImpl* storage_partition_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_WRAPPER_H_