Change FrameTree to return Frames instead of LocalFrames.

Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 1584 matching lines @@
     return document->frame()->spellChecker().selectionStartHasMarkerFor(DocumentMarker::Grammar, from, length);
 }
 
 unsigned Internals::numberOfScrollableAreas(Document* document, ExceptionState&)
 {
     unsigned count = 0;
     LocalFrame* frame = document->frame();
     if (frame->view()->scrollableAreas())
         count += frame->view()->scrollableAreas()->size();
 
-    for (LocalFrame* child = frame->tree().firstChild(); child; child = child->tree().nextSibling()) {
-        if (child->view() && child->view()->scrollableAreas())
-            count += child->view()->scrollableAreas()->size();
+    for (Frame* child = frame->tree().firstChild(); child; child = child->tree().nextSibling()) {
+        if (child->isLocalFrame() && toLocalFrame(child)->view() && toLocalFrame(child)->view()->scrollableAreas())
+            count += toLocalFrame(child)->view()->scrollableAreas()->size();
     }
 
     return count;
 }
 
 bool Internals::isPageBoxVisible(Document* document, int pageNumber, ExceptionState& exceptionState)
 {
     if (!document) {
         exceptionState.throwDOMException(InvalidAccessError, "No context document is available.");
         return false;
@@ skipping 750 matching lines @@
     } else if (type == "none") {
         webtype = blink::ConnectionTypeNone;
     } else {
         exceptionState.throwDOMException(NotFoundError, ExceptionMessages::failedToEnumerate("connection type", type));
         return;
     }
     networkStateNotifier().setWebConnectionTypeForTest(webtype);
 }
 
 } // namespace WebCore