Allow createLocalChild to specify previous sibling frame.

public/web/WebFrame.h

 /*
  * 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 196 matching lines @@
     // Returns the frame that opened this frame or 0 if there is none.
     BLINK_EXPORT WebFrame* opener() const;
 
     // Sets the frame that opened this one or 0 if there is none.
     virtual void setOpener(WebFrame*);
 
     // Reset the frame that opened this frame to 0.
     // This is executed between layout tests runs
     void clearOpener() { setOpener(0); }
 
+    // Inserts the given frame as a child of this frame, so that it is the next
+    // child after |previousSibling|, or first child if |previousSibling| is null.
+    BLINK_EXPORT void insertAfter(WebFrame* child, WebFrame* previousSibling);
+
     // Adds the given frame as a child of this frame.
     BLINK_EXPORT void appendChild(WebFrame*);
 
     // Removes the given child from this frame.
     virtual void removeChild(WebFrame*);
 
     // Returns the parent frame or 0 if this is a top-most frame.
     BLINK_EXPORT WebFrame* parent() const;
 
     // Returns the top-most frame in the hierarchy containing this frame.
@@ skipping 495 matching lines @@
     WebPrivateOwnPtr<OpenedFrameTracker> m_openedFrameTracker;
 };
 
 #if BLINK_IMPLEMENTATION
 Frame* toCoreFrame(const WebFrame*);
 #endif
 
 } // namespace blink
 
 #endif