Expose the selection root bounds in WebView.

public/web/WebView.h

 /*
  * Copyright (C) 2009, 2010, 2011, 2012 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 454 matching lines @@
     virtual bool setCompositionFromExistingText(int compositionStart, int compositionEnd, const WebVector<WebCompositionUnderline>& underlines) = 0;
     virtual void extendSelectionAndDelete(int before, int after) = 0;
 
     virtual bool isSelectionEditable() const = 0;
 
     virtual void setShowPaintRects(bool) = 0;
     virtual void setShowFPSCounter(bool) = 0;
     virtual void setContinuousPaintingEnabled(bool) = 0;
     virtual void setShowScrollBottleneckRects(bool) = 0;
 
+    // Compute the bounds of the root element of the current selection and fills
+    // the out-parameter on success. |bounds| coordinates will be relative to
+    // the contents window and will take into account the current scale level.
+    virtual void getSelectionRootBounds(WebRect& bounds) const = 0;
+
     // Visibility -----------------------------------------------------------
 
     // Sets the visibility of the WebView.
     virtual void setVisibilityState(WebPageVisibilityState visibilityState,
                                     bool isInitialState) { }
 
     // PageOverlay ----------------------------------------------------------
 
     // Adds/removes page overlay to this WebView. These functions change the
     // graphical appearance of the WebView. WebPageOverlay paints the
     // contents of the page overlay. It also provides an z-order number for
     // the page overlay. The z-order number defines the paint order the page
     // overlays. Page overlays with larger z-order number will be painted after
     // page overlays with smaller z-order number. That is, they appear above
     // the page overlays with smaller z-order number. If two page overlays have
     // the same z-order number, the later added one will be on top.
     virtual void addPageOverlay(WebPageOverlay*, int /*z-order*/) = 0;
     virtual void removePageOverlay(WebPageOverlay*) = 0;
 
     // Testing functionality for TestRunner ---------------------------------
 
 protected:
     ~WebView() {}
 };
 
 } // namespace blink
 
 #endif