Fixed two bugs related to OOPIFs

Source/core/page/FocusController.cpp

Index: Source/core/page/FocusController.cpp
diff --git a/Source/core/page/FocusController.cpp b/Source/core/page/FocusController.cpp
index 7629fdb1cb0f8618c6828e53819e3adfd0ce296c..37e361375100d3aa69e7d14cac68a64a2ad3e959 100644
--- a/Source/core/page/FocusController.cpp
+++ b/Source/core/page/FocusController.cpp
@@ -799,7 +799,7 @@ static void clearSelectionIfNeeded(LocalFrame* oldFocusedFrame, LocalFrame* newF
 
 bool FocusController::setFocusedElement(Element* element, PassRefPtrWillBeRawPtr<Frame> newFocusedFrame, WebFocusType type, InputDeviceCapabilities* sourceCapabilities)
 {
-    RefPtrWillBeRawPtr<LocalFrame> oldFocusedFrame = toLocalFrame(focusedFrame());
+    RefPtrWillBeRawPtr<LocalFrame> oldFocusedFrame = focusedFrame() && focusedFrame()->isLocalFrame() ? toLocalFrame(focusedFrame()) : nullptr;
     RefPtrWillBeRawPtr<Document> oldDocument = oldFocusedFrame ? oldFocusedFrame->document() : nullptr;
 
     Element* oldFocusedElement = oldDocument ? oldDocument->focusedElement() : nullptr;