Remove unneeded checks in RenderTreeBuilder

Source/core/dom/RenderTreeBuilder.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2011 Google Inc. 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
@@ skipping 86 matching lines @@
 {
     if (!m_style)
         m_style = toElement(m_node)->styleForRenderer();
     return *m_style;
 }
 
 void RenderTreeBuilder::createRendererForElementIfNeeded()
 {
     ASSERT(!m_node->renderer());
 
-    // If we're out of composition then we can't render since there's no parent to inherit from.
-    if (!m_renderingParent)
-        return;
-
-    Element* element = toElement(m_node);
-
     if (!shouldCreateRenderer())
         return;
 
+    Element* element = toElement(m_node);
     RenderStyle& style = this->style();
 
     if (!element->rendererIsNeeded(style))
         return;
 
     RenderObject* newRenderer = element->createRenderer(&style);
     if (!newRenderer)
         return;
 
     RenderObject* parentRenderer = this->parentRenderer();
@@ skipping 18 matching lines @@
     }
 
     // Note: Adding newRenderer instead of renderer(). renderer() may be a child of newRenderer.
     parentRenderer->addChild(newRenderer, nextRenderer);
 }
 
 void RenderTreeBuilder::createRendererForTextIfNeeded()
 {
     ASSERT(!m_node->renderer());
 
-    // If we're out of composition then we can't render since there's no parent to inherit from.
-    if (!m_renderingParent)
-        return;
-
     if (!shouldCreateRenderer())
         return;
 
     Text* textNode = toText(m_node);
     RenderObject* parentRenderer = this->parentRenderer();
 
     m_style = parentRenderer->style();
 
     if (!textNode->textRendererIsNeeded(*m_style, *parentRenderer))
         return;
 
     RenderText* newRenderer = textNode->createTextRenderer(m_style.get());
     if (!parentRenderer->isChildAllowed(newRenderer, m_style.get())) {
         newRenderer->destroy();
         return;
     }
 
     // Make sure the RenderObject already knows it is going to be added to a RenderFlowThread before we set the style
     // for the first time. Otherwise code using inRenderFlowThread() in the styleWillChange and styleDidChange will fail.
     newRenderer->setFlowThreadState(parentRenderer->flowThreadState());
 
     RenderObject* nextRenderer = this->nextRenderer();
     textNode->setRenderer(newRenderer);
     // Parent takes care of the animations, no need to call setAnimatableStyle.
     newRenderer->setStyle(m_style.release());
     parentRenderer->addChild(newRenderer, nextRenderer);
 }
 
 }