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

webkit/glue/plugins/pepper_url_response_info.cc

 // 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.
 
 #include "webkit/glue/plugins/pepper_url_response_info.h"
 
 #include "base/logging.h"
 #include "ppapi/c/pp_var.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebHTTPHeaderVisitor.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebString.h"
@@ skipping 74 matching lines @@
 }
 
 URLResponseInfo::~URLResponseInfo() {
 }
 
 // static
 const PPB_URLResponseInfo* URLResponseInfo::GetInterface() {
   return &ppb_urlresponseinfo;
 }
 
+URLResponseInfo* URLResponseInfo::AsURLResponseInfo() {
+  return this;
+}
+
 PP_Var URLResponseInfo::GetProperty(PP_URLResponseProperty property) {
   switch (property) {
     case PP_URLRESPONSEPROPERTY_URL:
       return StringVar::StringToPPVar(module(), url_);
     case PP_URLRESPONSEPROPERTY_REDIRECTURL:
       if (IsRedirect(status_code_))
         return StringVar::StringToPPVar(module(), redirect_url_);
       break;
     case PP_URLRESPONSEPROPERTY_REDIRECTMETHOD:
       if (IsRedirect(status_code_))
@@ skipping 23 matching lines @@
   response.visitHTTPHeaderFields(&flattener);
   headers_ = flattener.buffer();
 
   WebString file_path = response.downloadFilePath();
   if (!file_path.isEmpty())
     body_ = new FileRef(module(), webkit_glue::WebStringToFilePath(file_path));
   return true;
 }
 
 }  // namespace pepper