:hover style not applied on hover if its display property is different from original style's

Source/core/html/HTMLPlugInImageElement.cpp

Index: Source/core/html/HTMLPlugInImageElement.cpp
diff --git a/Source/core/html/HTMLPlugInImageElement.cpp b/Source/core/html/HTMLPlugInImageElement.cpp
index 8c782ef47c552c55cdf9b44267b9aa1a4a60f82b..622dbc28b1f6355a22c7fa81bab7f41a03923d35 100644
--- a/Source/core/html/HTMLPlugInImageElement.cpp
+++ b/Source/core/html/HTMLPlugInImageElement.cpp
@@ -159,7 +159,7 @@ void HTMLPlugInImageElement::willRecalcStyle(StyleChange)
         reattach();
 }
 
-void HTMLPlugInImageElement::attach()
+void HTMLPlugInImageElement::attach(const AttachContext& context)
 {
     PostAttachCallbackDisabler disabler(this);
 
@@ -168,7 +168,7 @@ void HTMLPlugInImageElement::attach()
     if (!isImage)
         queuePostAttachCallback(&HTMLPlugInImageElement::updateWidgetCallback, this);
 
-    HTMLPlugInElement::attach();
+    HTMLPlugInElement::attach(context);
 
     if (isImage && renderer() && !useFallbackContent()) {
         if (!m_imageLoader)
@@ -177,7 +177,7 @@ void HTMLPlugInImageElement::attach()
     }
 }
 
-void HTMLPlugInImageElement::detach()
+void HTMLPlugInImageElement::detach(const AttachContext& context)
 {
     // FIXME: Because of the insanity that is HTMLPlugInImageElement::recalcStyle,
     // we can end up detaching during an attach() call, before we even have a
@@ -185,7 +185,7 @@ void HTMLPlugInImageElement::detach()
     if (attached() && renderer() && !useFallbackContent())
         // Update the widget the next time we attach (detaching destroys the plugin).
         setNeedsWidgetUpdate(true);
-    HTMLPlugInElement::detach();
+    HTMLPlugInElement::detach(context);
 }
 
 void HTMLPlugInImageElement::updateWidgetIfNecessary()