Merge RenderWidget into single subclass, RenderPart

Source/web/ContextMenuClientImpl.cpp

Index: Source/web/ContextMenuClientImpl.cpp
diff --git a/Source/web/ContextMenuClientImpl.cpp b/Source/web/ContextMenuClientImpl.cpp
index d4f7d719e6038c91531876ce6fbd5eb80d629159..0a61b65e5ef2f7ac9159ae0f3ec3e42bd7d04fcd 100644
--- a/Source/web/ContextMenuClientImpl.cpp
+++ b/Source/web/ContextMenuClientImpl.cpp
@@ -57,7 +57,7 @@
 #include "core/page/EventHandler.h"
 #include "core/page/Page.h"
 #include "core/rendering/HitTestResult.h"
-#include "core/rendering/RenderWidget.h"
+#include "core/rendering/RenderPart.h"
 #include "platform/ContextMenu.h"
 #include "platform/Widget.h"
 #include "platform/text/TextBreakIterator.h"
@@ -273,7 +273,7 @@ void ContextMenuClientImpl::showContextMenu(const ContextMenu* defaultMenu)
     } else if (isHTMLObjectElement(*r.innerNonSharedNode()) || isHTMLEmbedElement(*r.innerNonSharedNode())) {
         RenderObject* object = r.innerNonSharedNode()->renderer();
         if (object && object->isWidget()) {
-            Widget* widget = toRenderWidget(object)->widget();
+            Widget* widget = toRenderPart(object)->widget();
             if (widget && widget->isPluginContainer()) {
                 data.mediaType = WebContextMenuData::MediaTypePlugin;
                 WebPluginContainerImpl* plugin = toWebPluginContainerImpl(widget);