Fix to remove customised String over IPC for SmartClip

Source/core/frame/SmartClip.h

 /*
  * Copyright (C) 2013 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 31 matching lines @@
     {
     }
 
     SmartClipData(Node* node, IntRect rect, String string)
         : m_node(node)
         , m_rect(rect)
         , m_string(string)
     {
     }
 
-    String toString();
+    IntRect getRect() const;

[eseidel, 2014/06/02 16:37:50]

We don't use "get" for getters.  Does this rect have a more descriptive name?  I
guess smartClip.rect() is fine.

[AviD, 2014/06/03 05:54:00]

Done.

+    String getClipData() const;

[eseidel, 2014/06/02 16:37:50]

How is this different from the toString above?

[AviD, 2014/06/03 05:54:00]

the toString() had customized string with both rect and string values.
(crbug.com/330872)
getClipData() only retruns the m_string value so that it can be sent separately
over IPC, avoiding pickling of data.

Due to custom serialization, SmartClip feature works only in single process
mode.
(https://codereview.chromium.org/260623004/diff/20001/content/browser/renderer...)
With removal of custom serialization, this feature can work in multi process
mode too.

 
 private:
     RefPtr<Node> m_node;
     IntRect m_rect;
     String m_string;
 };
 
 // SmartClip implements support for the copy operation
 // with an S-Pen on Samsung devices. The behavior of this
 // class is quirky and poorly tested. It's approximately
@@ skipping 14 matching lines @@
     void collectOverlappingChildNodes(Node* parentNode, const IntRect& cropRect, Vector<Node*>& overlappingNodeInfoTable);
     IntRect convertRectToWindow(const IntRect& nodeRect);
     String extractTextFromNode(Node*);
 
     RefPtr<LocalFrame> m_frame;
 };
 
 } // namespace WebCore
 
 #endif // SmartClip_h