Oilpan: RenderImageResource::shutdown should be called earlier.

Source/core/rendering/RenderImage.cpp

Index: Source/core/rendering/RenderImage.cpp
diff --git a/Source/core/rendering/RenderImage.cpp b/Source/core/rendering/RenderImage.cpp
index 11a4476e2d390244b2667bcc5d0a1c5f25d5fa98..b7937abfae5017235366d71098c545b3169111f7 100644
--- a/Source/core/rendering/RenderImage.cpp
+++ b/Source/core/rendering/RenderImage.cpp
@@ -75,8 +75,13 @@ RenderImage* RenderImage::createAnonymous(Document* document)
 
 RenderImage::~RenderImage()
 {
+}
+
+void RenderImage::destroy()
+{
     ASSERT(m_imageResource);
     m_imageResource->shutdown();
+    RenderReplaced::destroy();
 }
 
 void RenderImage::setImageResource(PassOwnPtr<RenderImageResource> imageResource)