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

webkit/glue/plugins/pepper_widget.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_widget.h"
 
 #include "base/logging.h"
 #include "ppapi/c/dev/ppb_widget_dev.h"
 #include "ppapi/c/dev/ppp_widget_dev.h"
 #include "ppapi/c/pp_completion_callback.h"
@@ skipping 55 matching lines @@
 }
 
 Widget::~Widget() {
 }
 
 // static
 const PPB_Widget_Dev* Widget::GetInterface() {
   return &ppb_widget;
 }
 
+Widget* Widget::AsWidget() {
+  return this;
+}
+
 bool Widget::GetLocation(PP_Rect* location) {
   *location = location_;
   return true;
 }
 
 void Widget::SetLocation(const PP_Rect* location) {
   location_ = *location;
   SetLocationInternal(location);
 }
 
 void Widget::Invalidate(const PP_Rect* dirty) {
   const PPP_Widget_Dev* widget = static_cast<const PPP_Widget_Dev*>(
       module()->GetPluginInterface(PPP_WIDGET_DEV_INTERFACE));
   if (!widget)
     return;
   ScopedResourceId resource(this);
   widget->Invalidate(instance_->pp_instance(), resource.id, dirty);
 }
 
 }  // namespace pepper