Introduce DEFINE_RENDER_OBJECT_TYPE_CASTS to replace manual toRenderFoo, and use it

Source/core/rendering/RenderInline.h

Index: Source/core/rendering/RenderInline.h
diff --git a/Source/core/rendering/RenderInline.h b/Source/core/rendering/RenderInline.h
index 6e2e7f9ff9c0a9b9555126009032f3efd507e15a..c69f0258daabee9d59bf33bacc2dfec4ce36f8df 100644
--- a/Source/core/rendering/RenderInline.h
+++ b/Source/core/rendering/RenderInline.h
@@ -187,20 +187,7 @@ private:
     bool m_alwaysCreateLineBoxes : 1;
 };
 
-inline RenderInline* toRenderInline(RenderObject* object)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isRenderInline());
-    return static_cast<RenderInline*>(object);
-}
-
-inline const RenderInline* toRenderInline(const RenderObject* object)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isRenderInline());
-    return static_cast<const RenderInline*>(object);
-}
-
-// This will catch anyone doing an unnecessary cast.
-void toRenderInline(const RenderInline*);
+DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderInline, isRenderInline());
 
 } // namespace WebCore