Revert 170347 "Convert HTMLFrameOwnerElement and FocusController..."

Source/bindings/v8/BindingSecurity.cpp

Index: Source/bindings/v8/BindingSecurity.cpp
===================================================================
--- Source/bindings/v8/BindingSecurity.cpp	(revision 170478)
+++ Source/bindings/v8/BindingSecurity.cpp	(working copy)
@@ -80,18 +80,14 @@
     return false;
 }
 
-bool BindingSecurity::shouldAllowAccessToFrame(v8::Isolate* isolate, Frame* target, SecurityReportingOption reportingOption)
+bool BindingSecurity::shouldAllowAccessToFrame(v8::Isolate* isolate, LocalFrame* target, SecurityReportingOption reportingOption)
 {
-    if (!target || !target->isLocalFrame())
-        return false;
-    return canAccessDocument(isolate, toLocalFrame(target)->document(), reportingOption);
+    return target && canAccessDocument(isolate, target->document(), reportingOption);
 }
 
-bool BindingSecurity::shouldAllowAccessToFrame(v8::Isolate* isolate, Frame* target, ExceptionState& exceptionState)
+bool BindingSecurity::shouldAllowAccessToFrame(v8::Isolate* isolate, LocalFrame* target, ExceptionState& exceptionState)
 {
-    if (!target || !target->isLocalFrame())
-        return false;
-    return canAccessDocument(isolate, toLocalFrame(target)->document(), exceptionState);
+    return target && canAccessDocument(isolate, target->document(), exceptionState);
 }
 
 bool BindingSecurity::shouldAllowAccessToNode(v8::Isolate* isolate, Node* target, ExceptionState& exceptionState)