Have ElementRareData::ensure*() methods return references

Source/core/dom/ElementRareData.h

 /*
  * Copyright (C) 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 David Smith <catfish.man@gmail.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 73 matching lines @@
     void setChildrenAffectedByLastChildRules(bool value) { m_childrenAffectedByLastChildRules = value; }
     bool childrenAffectedByDirectAdjacentRules() const { return m_childrenAffectedByDirectAdjacentRules; }
     void setChildrenAffectedByDirectAdjacentRules(bool value) { m_childrenAffectedByDirectAdjacentRules = value; }
     bool childrenAffectedByForwardPositionalRules() const { return m_childrenAffectedByForwardPositionalRules; }
     void setChildrenAffectedByForwardPositionalRules(bool value) { m_childrenAffectedByForwardPositionalRules = value; }
     bool childrenAffectedByBackwardPositionalRules() const { return m_childrenAffectedByBackwardPositionalRules; }
     void setChildrenAffectedByBackwardPositionalRules(bool value) { m_childrenAffectedByBackwardPositionalRules = value; }
     unsigned childIndex() const { return m_childIndex; }
     void setChildIndex(unsigned index) { m_childIndex = index; }
 
-    CSSStyleDeclaration* ensureInlineCSSStyleDeclaration(Element* ownerElement);
+    CSSStyleDeclaration& ensureInlineCSSStyleDeclaration(Element* ownerElement);
 
     void clearShadow() { m_shadow = nullptr; }
     ElementShadow* shadow() const { return m_shadow.get(); }
     ElementShadow& ensureShadow()
     {
         if (!m_shadow)
             m_shadow = ElementShadow::create();
         return *m_shadow;
     }
 
@@ skipping 25 matching lines @@
     ActiveAnimations* activeAnimations() { return m_activeAnimations.get(); }
     void setActiveAnimations(PassOwnPtr<ActiveAnimations> activeAnimations)
     {
         m_activeAnimations = activeAnimations;
     }
 
     bool hasPendingResources() const { return m_hasPendingResources; }
     void setHasPendingResources(bool has) { m_hasPendingResources = has; }
 
     bool hasInputMethodContext() const { return m_inputMethodContext; }
-    InputMethodContext* ensureInputMethodContext(HTMLElement* element)
+    InputMethodContext& ensureInputMethodContext(HTMLElement* element)
     {
         if (!m_inputMethodContext)
             m_inputMethodContext = InputMethodContext::create(element);
-        return m_inputMethodContext.get();
+        return *m_inputMethodContext;
     }
 
     bool hasPseudoElements() const;
     void clearPseudoElements();
 
 private:
     short m_tabIndex;
     unsigned short m_childIndex;
     unsigned m_tabIndexWasSetExplicitly : 1;
     unsigned m_needsFocusAppearanceUpdateSoonAfterAttach : 1;
@@ skipping 135 matching lines @@
     setChildrenAffectedByFirstChildRules(false);
     setChildrenAffectedByLastChildRules(false);
     setChildrenAffectedByDirectAdjacentRules(false);
     setChildrenAffectedByForwardPositionalRules(false);
     setChildrenAffectedByBackwardPositionalRules(false);
 }
 
 } // namespace
 
 #endif // ElementRareData_h