Only flag the LayoutObject on CSP error if one is attached

third_party/WebKit/Source/core/html/HTMLPlugInElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLPlugInElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLPlugInElement.cpp b/third_party/WebKit/Source/core/html/HTMLPlugInElement.cpp
index db0e19a69837406329c6badb754d0a8a627e0ee6..90f9055ea29dde58a7f03e738f2173407097f168 100644
--- a/third_party/WebKit/Source/core/html/HTMLPlugInElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLPlugInElement.cpp
@@ -568,7 +568,8 @@ bool HTMLPlugInElement::allowedToLoadObject(const KURL& url, const String& mimeT
         fastGetAttribute(HTMLNames::typeAttr);
     if (!document().contentSecurityPolicy()->allowObjectFromSource(url)
         || !document().contentSecurityPolicy()->allowPluginTypeForDocument(document(), mimeType, declaredMimeType, url)) {
-        layoutEmbeddedItem().setPluginUnavailabilityReason(LayoutEmbeddedObject::PluginBlockedByContentSecurityPolicy);
+        if (LayoutEmbeddedItem layoutItem = layoutEmbeddedItem())
+            layoutItem.setPluginUnavailabilityReason(LayoutEmbeddedObject::PluginBlockedByContentSecurityPolicy);
         return false;
     }
     // If the URL is empty, a plugin could still be instantiated if a MIME-type