Remove code that is unused after ContextMenu cleanup

Source/core/rendering/RenderBlock.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 6490 matching lines @@
             const FontMetrics& fontMetrics = firstLineStyle()->fontMetrics();
             return fontMetrics.ascent()
                  + (lineHeight(true, lineDirection, PositionOfInteriorLineBoxes) - fontMetrics.height()) / 2
                  + (lineDirection == HorizontalLine ? borderTop() + paddingTop() : borderRight() + paddingRight());
         }
     }
 
     return -1;
 }
 
-bool RenderBlock::containsNonZeroBidiLevel() const
-{
-    for (RootInlineBox* root = firstRootBox(); root; root = root->nextRootBox()) {
-        for (InlineBox* box = root->firstLeafChild(); box; box = box->nextLeafChild()) {
-            if (box->bidiLevel())
-                return true;
-        }
-    }
-    return false;
-}
-
 RenderBlock* RenderBlock::firstLineBlock() const
 {
     RenderBlock* firstLineBlock = const_cast<RenderBlock*>(this);
     bool hasPseudo = false;
     while (true) {
         hasPseudo = firstLineBlock->style()->hasPseudoStyle(FIRST_LINE);
         if (hasPseudo)
             break;
         RenderObject* parentBlock = firstLineBlock->parent();
         // We include isRenderButton in this check because buttons are
@@ skipping 1615 matching lines @@
 {
     memoryInstrumentation->addRootObject(gColumnInfoMap, WebCoreMemoryTypes::RenderingStructures);
     memoryInstrumentation->addRootObject(gPositionedDescendantsMap, WebCoreMemoryTypes::RenderingStructures);
     memoryInstrumentation->addRootObject(gPercentHeightDescendantsMap, WebCoreMemoryTypes::RenderingStructures);
     memoryInstrumentation->addRootObject(gPositionedContainerMap, WebCoreMemoryTypes::RenderingStructures);
     memoryInstrumentation->addRootObject(gPercentHeightContainerMap, WebCoreMemoryTypes::RenderingStructures);
     memoryInstrumentation->addRootObject(gDelayedUpdateScrollInfoSet, WebCoreMemoryTypes::RenderingStructures);
 }
 
 } // namespace WebCore