Add the "virtual" keyword on method overrides that are missing it.

webkit/appcache/appcache_update_job.h

 // Copyright (c) 2009 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 WEBKIT_APPCACHE_APPCACHE_UPDATE_JOB_H_
 #define WEBKIT_APPCACHE_APPCACHE_UPDATE_JOB_H_
 
 #include <deque>
 #include <map>
 #include <set>
@@ skipping 84 matching lines @@
 
   // Overridden from net::URLRequest::Delegate:
   virtual void OnResponseStarted(net::URLRequest* request);
   virtual void OnReadCompleted(net::URLRequest* request, int bytes_read);
   virtual void OnReceivedRedirect(net::URLRequest* request,
                                   const GURL& new_url,
                                   bool* defer_redirect);
   // TODO(jennb): any other delegate callbacks to handle? certificate?
 
   // Methods for AppCacheStorage::Delegate.
-  void OnResponseInfoLoaded(AppCacheResponseInfo* response_info,
-                            int64 response_id);
-  void OnGroupAndNewestCacheStored(AppCacheGroup* group, AppCache* newest_cache,
-                                   bool success, bool would_exceed_quota);
-  void OnGroupMadeObsolete(AppCacheGroup* group, bool success);
+  virtual void OnResponseInfoLoaded(AppCacheResponseInfo* response_info,
+                                    int64 response_id);
+  virtual void OnGroupAndNewestCacheStored(AppCacheGroup* group,
+                                           AppCache* newest_cache,
+                                           bool success,
+                                           bool would_exceed_quota);
+  virtual void OnGroupMadeObsolete(AppCacheGroup* group, bool success);
 
   // Methods for AppCacheHost::Observer.
-  void OnCacheSelectionComplete(AppCacheHost* host) {}  // N/A
-  void OnDestructionImminent(AppCacheHost* host);
+  virtual void OnCacheSelectionComplete(AppCacheHost* host) {}  // N/A
+  virtual void OnDestructionImminent(AppCacheHost* host);
 
   void CheckPolicy();
   void OnPolicyCheckComplete(int rv);
 
   void HandleCacheFailure(const std::string& error_message);
 
   void FetchManifest(bool is_first_fetch);
 
   // Add extra conditional HTTP headers to the request based on the
   // currently cached response headers.
@@ skipping 166 matching lines @@
       policy_callback_;
 
   FRIEND_TEST_ALL_PREFIXES(AppCacheGroupTest, QueueUpdate);
 
   DISALLOW_COPY_AND_ASSIGN(AppCacheUpdateJob);
 };
 
 }  // namespace appcache
 
 #endif  // WEBKIT_APPCACHE_APPCACHE_UPDATE_JOB_H_