Return Frame&, not Frame* from RenderView::frame()

Source/core/page/Frame.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Simon Hausmann <hausmann@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  *                     2001 George Staikos <staikos@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2005 Alexey Proskuryakov <ap@nypop.com>
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
@@ skipping 293 matching lines @@
     ASSERT_ARG(widget, widget);
 
     if (RenderWidget* renderer = RenderWidget::find(widget)) {
         if (Node* node = renderer->node())
             return node->document().frame();
     }
 
     // Assume all widgets are either a FrameView or owned by a RenderWidget.
     // FIXME: That assumption is not right for scroll bars!
     ASSERT_WITH_SECURITY_IMPLICATION(widget->isFrameView());
-    return toFrameView(widget)->frame();
+    return &toFrameView(widget)->frame();
 }
 
 void Frame::clearTimers(FrameView *view, Document *document)
 {
     if (view) {
         view->unscheduleRelayout();
-        if (view->frame()) {
-            if (!RuntimeEnabledFeatures::webAnimationsCSSEnabled())
-                view->frame()->animation()->suspendAnimationsForDocument(document);
-            view->frame()->eventHandler()->stopAutoscrollTimer();
-        }
+        if (!RuntimeEnabledFeatures::webAnimationsCSSEnabled())
+            view->frame().animation()->suspendAnimationsForDocument(document);
+        view->frame().eventHandler()->stopAutoscrollTimer();
     }
 }
 
 void Frame::clearTimers()
 {
     clearTimers(m_view.get(), document());
 }
 
 void Frame::dispatchVisibilityStateChangeEvent()
 {
@@ skipping 374 matching lines @@
     if (!m_page)
         return 0;
 
     double ratio = m_page->deviceScaleFactor();
     if (RuntimeEnabledFeatures::devicePixelRatioIncludesZoomEnabled())
         ratio *= pageZoomFactor();
     return ratio;
 }
 
 } // namespace WebCore