Make it clear a DocumentNameCollection can only contain HTMLElements

Source/bindings/core/v8/WindowProxy.cpp

 /*
  * Copyright (C) 2008, 2009, 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 27 matching lines @@
 #include "bindings/core/v8/V8Document.h"
 #include "bindings/core/v8/V8GCForContextDispose.h"
 #include "bindings/core/v8/V8HTMLCollection.h"
 #include "bindings/core/v8/V8HTMLDocument.h"
 #include "bindings/core/v8/V8HiddenValue.h"
 #include "bindings/core/v8/V8Initializer.h"
 #include "bindings/core/v8/V8ObjectConstructor.h"
 #include "bindings/core/v8/V8Window.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/csp/ContentSecurityPolicy.h"
+#include "core/html/DocumentNameCollection.h"
 #include "core/html/HTMLCollection.h"
 #include "core/html/HTMLIFrameElement.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/loader/DocumentLoader.h"
 #include "core/loader/FrameLoader.h"
 #include "core/loader/FrameLoaderClient.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/ScriptForbiddenScope.h"
 #include "platform/TraceEvent.h"
 #include "platform/heap/Handle.h"
@@ skipping 352 matching lines @@
     updateActivityLogger();
     updateDocumentProperty();
     updateSecurityOrigin(m_frame->document()->securityOrigin());
 }
 
 static v8::Handle<v8::Value> getNamedProperty(HTMLDocument* htmlDocument, const AtomicString& key, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     if (!htmlDocument->hasNamedItem(key) && !htmlDocument->hasExtraNamedItem(key))
         return v8Undefined();
 
-    RefPtrWillBeRawPtr<HTMLCollection> items = htmlDocument->documentNamedItems(key);
+    RefPtrWillBeRawPtr<DocumentNameCollection> items = htmlDocument->documentNamedItems(key);
     if (items->isEmpty())
         return v8Undefined();
 
     if (items->hasExactlyOneItem()) {
-        Element* element = items->item(0);
+        HTMLElement* element = items->item(0);
         ASSERT(element);
         Frame* frame = isHTMLIFrameElement(*element) ? toHTMLIFrameElement(*element).contentFrame() : 0;
         if (frame)
             return toV8(frame->domWindow(), creationContext, isolate);
         return toV8(element, creationContext, isolate);
     }
     return toV8(items.release(), creationContext, isolate);
 }
 
 static void getter(v8::Local<v8::String> property, const v8::PropertyCallbackInfo<v8::Value>& info)
@@ skipping 47 matching lines @@
 
 void WindowProxy::updateSecurityOrigin(SecurityOrigin* origin)
 {
     ASSERT(m_world->isMainWorld());
     if (!isContextInitialized())
         return;
     setSecurityToken(origin);
 }
 
 } // namespace blink