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

webkit/glue/plugins/pepper_url_loader.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 WEBKIT_GLUE_PLUGINS_PEPPER_URL_LOADER_H_
 #define WEBKIT_GLUE_PLUGINS_PEPPER_URL_LOADER_H_
 
 #include <deque>
 
 #include "base/scoped_ptr.h"
@@ skipping 26 matching lines @@
 
   // Returns a pointer to the interface implementing PPB_URLLoader that is
   // exposed to the plugin.
   static const PPB_URLLoader* GetInterface();
 
   // Returns a pointer to the interface implementing PPB_URLLoaderTrusted that
   // is exposed to the plugin.
   static const PPB_URLLoaderTrusted* GetTrustedInterface();
 
   // Resource overrides.
-  URLLoader* AsURLLoader() { return this; }
+  virtual URLLoader* AsURLLoader();
 
   // PPB_URLLoader implementation.
   int32_t Open(URLRequestInfo* request, PP_CompletionCallback callback);
   int32_t FollowRedirect(PP_CompletionCallback callback);
   bool GetUploadProgress(int64_t* bytes_sent,
                          int64_t* total_bytes_to_be_sent);
   bool GetDownloadProgress(int64_t* bytes_received,
                            int64_t* total_bytes_to_be_received);
   int32_t ReadResponseBody(char* buffer, int32_t bytes_to_read,
                            PP_CompletionCallback callback);
@@ skipping 17 matching lines @@
                                int data_length);
   virtual void didReceiveData(WebKit::WebURLLoader* loader,
                               const char* data,
                               int data_length);
   virtual void didFinishLoading(WebKit::WebURLLoader* loader,
                                 double finish_time);
   virtual void didFail(WebKit::WebURLLoader* loader,
                        const WebKit::WebURLError& error);
 
   // PluginInstance::Observer implementation.
-  void InstanceDestroyed(PluginInstance* instance);
+  virtual void InstanceDestroyed(PluginInstance* instance);
 
   URLResponseInfo* response_info() const { return response_info_; }
 
  private:
   void RunCallback(int32_t result);
   size_t FillUserBuffer();
 
   // Converts a WebURLResponse to a URLResponseInfo and saves it.
   void SaveResponse(const WebKit::WebURLResponse& response);
 
@@ skipping 35 matching lines @@
   int32_t done_status_;
 
   bool has_universal_access_;
 
   PP_URLLoaderTrusted_StatusCallback status_callback_;
 };
 
 }  // namespace pepper
 
 #endif  // WEBKIT_GLUE_PLUGINS_PEPPER_URL_LOADER_H_