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

chrome/browser/task_manager/task_manager.h

 // Copyright (c) 2010 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 CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_H_
 #define CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 279 matching lines @@
   // Returns the type of the given resource.
   TaskManager::Resource::Type GetResourceType(int index) const;
 
   // Returns TabContents of given resource or NULL if not applicable.
   TabContents* GetResourceTabContents(int index) const;
 
   // Returns Extension of given resource or NULL if not applicable.
   const Extension* GetResourceExtension(int index) const;
 
   // JobObserver methods:
-  void OnJobAdded(net::URLRequestJob* job);
-  void OnJobRemoved(net::URLRequestJob* job);
-  void OnJobDone(net::URLRequestJob* job, const URLRequestStatus& status);
-  void OnJobRedirect(net::URLRequestJob* job,
-                     const GURL& location,
-                     int status_code);
-  void OnBytesRead(net::URLRequestJob* job, const char* buf, int byte_count);
+  virtual void OnJobAdded(net::URLRequestJob* job);
+  virtual void OnJobRemoved(net::URLRequestJob* job);
+  virtual void OnJobDone(net::URLRequestJob* job,
+                         const URLRequestStatus& status);
+  virtual void OnJobRedirect(net::URLRequestJob* job,
+                             const GURL& location,
+                             int status_code);
+  virtual void OnBytesRead(net::URLRequestJob* job,
+                           const char* buf,
+                           int byte_count);
 
   void AddResourceProvider(TaskManager::ResourceProvider* provider);
   void RemoveResourceProvider(TaskManager::ResourceProvider* provider);
 
   void AddResource(TaskManager::Resource* resource);
   void RemoveResource(TaskManager::Resource* resource);
 
   void StartUpdating();
   void StopUpdating();
 
@@ skipping 139 matching lines @@
   // Whether we are currently in the process of updating.
   UpdateState update_state_;
 
   // A salt lick for the goats.
   int goat_salt_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskManagerModel);
 };
 
 #endif  // CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_H_