Use Position instead of VisiblePosition for SurroundingText.

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 2321 matching lines @@
 void Internals::setValueForUser(Element* element, const String& value)
 {
     toHTMLInputElement(element)->setValueForUser(value);
 }
 
 String Internals::textSurroundingNode(Node* node, int x, int y, unsigned long maxLength)
 {
     if (!node)
         return String();
     blink::WebPoint point(x, y);
-    SurroundingText surroundingText(VisiblePosition(node->renderer()->positionForPoint(static_cast<IntPoint>(point))), maxLength);
+    SurroundingText surroundingText(VisiblePosition(node->renderer()->positionForPoint(static_cast<IntPoint>(point))).deepEquivalent().parentAnchoredEquivalent(), maxLength);
     return surroundingText.content();
 }
 
 void Internals::setFocused(bool focused)
 {
     frame()->page()->focusController().setFocused(focused);
 }
 
 void Internals::setNetworkStateNotifierTestOnly(bool testOnly)
 {
@@ skipping 16 matching lines @@
     } else if (type == "none") {
         webtype = blink::ConnectionTypeNone;
     } else {
         exceptionState.throwDOMException(NotFoundError, ExceptionMessages::failedToEnumerate("connection type", type));
         return;
     }
     networkStateNotifier().setWebConnectionTypeForTest(webtype);
 }
 
 } // namespace WebCore