Remove unused helpers to selectively traverse through only local frames.

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

 /*
  * Copyright (C) 2009 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 1799 matching lines @@
 {
     // This can't use the LocalFrame::localFrameRoot, since it may be called
     // when the WebLocalFrame exists but the core LocalFrame does not.
     // TODO(alexmos, dcheng): Clean this up to only calculate this in one place.
     WebLocalFrameImpl* localRoot = this;
     while (localRoot->parent() && localRoot->parent()->isWebLocalFrame())
         localRoot = toWebLocalFrameImpl(localRoot->parent());
     return localRoot;
 }
 
-WebLocalFrame* WebLocalFrameImpl::traversePreviousLocal(bool wrap) const
-{
-    WebFrame* previousLocalFrame = this->traversePrevious(wrap);
-    while (previousLocalFrame && !previousLocalFrame->isWebLocalFrame())
-        previousLocalFrame = previousLocalFrame->traversePrevious(wrap);
-    return previousLocalFrame ? previousLocalFrame->toWebLocalFrame() : nullptr;
-}
-
-WebLocalFrame* WebLocalFrameImpl::traverseNextLocal(bool wrap) const
-{
-    WebFrame* nextLocalFrame = this->traverseNext(wrap);
-    while (nextLocalFrame && !nextLocalFrame->isWebLocalFrame())
-        nextLocalFrame = nextLocalFrame->traverseNext(wrap);
-    return nextLocalFrame ? nextLocalFrame->toWebLocalFrame() : nullptr;
-}
-
 void WebLocalFrameImpl::sendPings(const WebURL& destinationURL)
 {
     DCHECK(frame());
     DCHECK(m_contextMenuNode.get());
     Element* anchor = m_contextMenuNode->enclosingLinkEventParentOrSelf();
     if (isHTMLAnchorElement(anchor))
         toHTMLAnchorElement(anchor)->sendPings(destinationURL);
 }
 
 bool WebLocalFrameImpl::dispatchBeforeUnloadEvent(bool isReload)
@@ skipping 315 matching lines @@
 {
     frame()->loader().forceSandboxFlags(static_cast<SandboxFlags>(flags));
 }
 
 void WebLocalFrameImpl::clearActiveFindMatch()
 {
     ensureTextFinder().clearActiveFindMatch();
 }
 
 } // namespace blink