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

Source/core/rendering/RenderTextControl.cpp

Index: Source/core/rendering/RenderTextControl.cpp
diff --git a/Source/core/rendering/RenderTextControl.cpp b/Source/core/rendering/RenderTextControl.cpp
index 30179a0c7ade61095a611f6a5c6393dce4e161f5..690a1c43c11763477ca478f40b6409d78f4a3bd6 100644
--- a/Source/core/rendering/RenderTextControl.cpp
+++ b/Source/core/rendering/RenderTextControl.cpp
@@ -58,14 +58,14 @@ void RenderTextControl::addChild(RenderObject* newChild, RenderObject* beforeChi
     // 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;