Remove last use of the toLocalFrameTemporary macro.

third_party/WebKit/Source/core/dom/Document.cpp

Index: third_party/WebKit/Source/core/dom/Document.cpp
diff --git a/third_party/WebKit/Source/core/dom/Document.cpp b/third_party/WebKit/Source/core/dom/Document.cpp
index 56bf7f9f9a5e801cd16df98704fada0d2203111f..8b9a94f730d889f29fef9fb98119652ce8f424f8 100644
--- a/third_party/WebKit/Source/core/dom/Document.cpp
+++ b/third_party/WebKit/Source/core/dom/Document.cpp
@@ -990,8 +990,7 @@ PassRefPtrWillBeRawPtr<Node> Document::adoptNode(PassRefPtrWillBeRawPtr<Node> so
 
         if (source->isFrameOwnerElement()) {
             HTMLFrameOwnerElement* frameOwnerElement = toHTMLFrameOwnerElement(source.get());
-            // FIXME(kenrb): the downcast can be removed when the FrameTree supports RemoteFrames.
-            if (frame() && frame()->tree().isDescendantOf(toLocalFrameTemporary(frameOwnerElement->contentFrame()))) {
+            if (frame() && frame()->tree().isDescendantOf(frameOwnerElement->contentFrame())) {
                 exceptionState.throwDOMException(HierarchyRequestError, "The node provided is a frame which contains this document.");
                 return nullptr;
             }