Remove StyleEngine.h include from RenderObject.h

Source/core/rendering/RenderObjectInlines.h

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef RenderObjectInlines_h
+#define RenderObjectInlines_h
+
+#include "core/dom/StyleEngine.h"
+#include "core/rendering/RenderObject.h"
+
+namespace WebCore {
+
+// The following methods are inlined for performance but not put in
+// RenderObject.h because that would unnecessarily tie RenderObject.h
+// to StyleEngine.h for all users of RenderObject.h that don't use
+// these methods.
+
+inline RenderStyle* RenderObject::firstLineStyle() const
+{
+    return document().styleEngine()->usesFirstLineRules() ? cachedFirstLineStyle() : style();
+}
+
+inline RenderStyle* RenderObject::style(bool firstLine) const
+{
+    return firstLine ? firstLineStyle() : style();
+}
+
+}
+
+#endif