Have RenderBlockFlow sub-classes' methods call their super-class method properly.

Source/core/rendering/RenderTextControl.cpp

 /**
  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
  *           (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 40 matching lines @@
 {
     return textFormControlElement()->innerTextElement();
 }
 
 void RenderTextControl::addChild(RenderObject* newChild, RenderObject* beforeChild)
 {
     // FIXME: This is a terrible hack to get the caret over the placeholder text since it'll
     // make us paint the placeholder first. (See https://trac.webkit.org/changeset/118733)
     Node* node = newChild->node();
     if (node && node->isElementNode() && toElement(node)->shadowPseudoId() == "-webkit-input-placeholder")
-        RenderBlock::addChild(newChild, firstChild());
+        RenderBlockFlow::addChild(newChild, firstChild());
     else
-        RenderBlock::addChild(newChild, beforeChild);
+        RenderBlockFlow::addChild(newChild, beforeChild);
 }
 
 void RenderTextControl::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
 {
-    RenderBlock::styleDidChange(diff, oldStyle);
+    RenderBlockFlow::styleDidChange(diff, oldStyle);
     Element* innerText = innerTextElement();
     if (!innerText)
         return;
     RenderBlock* innerTextRenderer = toRenderBlock(innerText->renderer());
     if (innerTextRenderer) {
         // We may have set the width and the height in the old style in layout().
         // Reset them now to avoid getting a spurious layout hint.
         innerTextRenderer->style()->setHeight(Length());
         innerTextRenderer->style()->setWidth(Length());
         innerTextRenderer->setStyle(createInnerTextStyle(style()));
@@ skipping 210 matching lines @@
     HTMLElement* placeholder = toHTMLTextFormControlElement(node())->placeholderElement();
     RenderObject* placeholderRenderer = placeholder ? placeholder->renderer() : 0;
     if (!placeholderRenderer)
         return 0;
     if (relayoutChildren)
         layoutScope.setChildNeedsLayout(placeholderRenderer);
     return placeholderRenderer;
 }
 
 } // namespace WebCore