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

webkit/glue/plugins/pepper_file_chooser.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_file_chooser.h"
 
 #include <string>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 101 matching lines @@
 }
 
 FileChooser::~FileChooser() {
 }
 
 // static
 const PPB_FileChooser_Dev* FileChooser::GetInterface() {
   return &ppb_filechooser;
 }
 
+FileChooser* FileChooser::AsFileChooser() {
+  return this;
+}
+
 void FileChooser::StoreChosenFiles(const std::vector<std::string>& files) {
   next_chosen_file_index_ = 0;
   std::vector<std::string>::const_iterator end_it = files.end();
   for (std::vector<std::string>::const_iterator it = files.begin();
        it != end_it; it++) {
     chosen_files_.push_back(make_scoped_refptr(
         new FileRef(module(), FilePath().AppendASCII(*it))));
   }
 
   if (!completion_callback_.func)
@@ skipping 20 matching lines @@
 }
 
 scoped_refptr<FileRef> FileChooser::GetNextChosenFile() {
   if (next_chosen_file_index_ >= chosen_files_.size())
     return NULL;
 
   return chosen_files_[next_chosen_file_index_++];
 }
 
 }  // namespace pepper