AppCache: Remove dead code from AppCacheService

content/public/browser/appcache_service.h

 // Copyright (c) 2012 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_PUBLIC_BROWSER_APPCACHE_SERVICE_H_
 #define CONTENT_PUBLIC_BROWSER_APPCACHE_SERVICE_H_
 
 #include <map>
 #include <set>
 
@@ skipping 16 matching lines @@
 
  private:
   friend class base::RefCountedThreadSafe<AppCacheInfoCollection>;
   virtual ~AppCacheInfoCollection();
 };
 
 // Exposes a limited interface to the AppCacheService.
 // Call these methods only on the IO thread.
 class CONTENT_EXPORT AppCacheService {
  public:
-  // Determines if a request for 'url' can be satisfied while offline.
-  // This method always completes asynchronously.
-  virtual void CanHandleMainResourceOffline(const GURL& url,
-                                            const GURL& first_party,
-                                            const net::CompletionCallback&
-                                            callback) = 0;
-
   // Populates 'collection' with info about all of the appcaches stored
   // within the service, 'callback' is invoked upon completion. The service
   // acquires a reference to the 'collection' until completion.
   // This method always completes asynchronously.
   virtual void GetAllAppCacheInfo(AppCacheInfoCollection* collection,
                                   const net::CompletionCallback& callback) = 0;
 
   // Deletes the group identified by 'manifest_url', 'callback' is
   // invoked upon completion. Upon completion, the cache group and
   // any resources within the group are no longer loadable and all
   // subresource loads for pages associated with a deleted group
   // will fail. This method always completes asynchronously.
   virtual void DeleteAppCacheGroup(const GURL& manifest_url,
                                    const net::CompletionCallback& callback) = 0;
 
  protected:
   virtual ~AppCacheService() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_APPCACHE_SERVICE_H_