Return reference from styleEngine() accessor.

Source/web/PopupMenuImpl.cpp

 // Copyright (c) 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.
 
 #include "config.h"
 #include "web/PopupMenuImpl.h"
 
 #include "core/HTMLNames.h"
 #include "core/css/CSSFontSelector.h"
 #include "core/dom/StyleEngine.h"
@@ skipping 190 matching lines @@
     addProperty("title", element.title(), data);
     addProperty("ariaLabel", element.fastGetAttribute(HTMLNames::aria_labelAttr), data);
     addProperty("disabled", element.isDisabledFormControl(), data);
     addElementStyle(element, data);
     PagePopupClient::addString("},\n", data);
 }
 
 void PopupMenuImpl::didWriteDocument(Document& document)
 {
     Document& ownerDocument = ownerElement().document();
-    document.styleEngine()->setFontSelector(PopupMenuCSSFontSelector::create(&document, ownerDocument.styleEngine()->fontSelector()));
+    document.styleEngine().setFontSelector(PopupMenuCSSFontSelector::create(&document, ownerDocument.styleEngine().fontSelector()));
 }
 
 void PopupMenuImpl::setValueAndClosePopup(int numValue, const String& stringValue)
 {
     ASSERT(m_popup);
     ASSERT(m_client);
     bool success;
     int listIndex = stringValue.toInt(&success);
     ASSERT(success);
     m_client->selectionChanged(listIndex);
@@ skipping 81 matching lines @@
 #if ENABLE(OILPAN)
     // Cannot be done during finalization, so instead done when the
     // render object is destroyed and disconnected.
     //
     // FIXME: do this always, regardless of ENABLE(OILPAN).
     dispose();
 #endif
 }
 
 } // namespace blink