+commit 6562b9521098e108c431cd45b8cb691dc4abf8c8
+Author: oskwon <oskwon@dev3>
+Date: Sat Feb 4 03:49:59 2017 +0900
+
+ fix!!
+
+diff --git a/Source/WebCore/plugins/PluginView.cpp b/Source/WebCore/plugins/PluginView.cpp
+index c21fcd7..d6a3a85 100644
+--- a/Source/WebCore/plugins/PluginView.cpp
++++ b/Source/WebCore/plugins/PluginView.cpp
+@@ -126,7 +126,11 @@ IntRect PluginView::windowClipRect() const
+ IntRect clipRect(m_windowRect);
+
+ // Take our element and get the clip rect from the enclosing layer and frame view.
+- RenderLayer* layer = m_element->renderer()->enclosingLayer();
++ RenderLayer* layer = 0;
++ RenderObject* renderer = m_element->renderer();
++ if (renderer) {
++ layer = m_element->renderer()->enclosingLayer();
++ }
+ FrameView* parentView = m_element->document()->view();
+ clipRect.intersect(parentView->windowClipRectForLayer(layer, true));
+