[screen-orientation] Update implementation to match recent spec changes.

Source/core/frame/LocalFrame.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 141 matching lines @@
     m_view = view;
 
     if (m_view && isMainFrame()) {
         if (settings()->pinchVirtualViewportEnabled())
             m_host->pinchViewport().mainFrameDidChangeSize();
         else
             m_view->setVisibleContentScaleFactor(page()->pageScaleFactor());
     }
 }
 
-void LocalFrame::sendOrientationChangeEvent()
-{
-    if (!RuntimeEnabledFeatures::orientationEventEnabled() && !RuntimeEnabledFeatures::screenOrientationEnabled())
-        return;
-
-    if (page()->visibilityState() != PageVisibilityStateVisible)
-        return;
-
-    LocalDOMWindow* window = domWindow();
-    if (!window)
-        return;
-    window->dispatchEvent(Event::create(EventTypeNames::orientationchange));
-
-    // Notify subframes.
-    Vector<RefPtr<LocalFrame> > childFrames;
-    for (Frame* child = tree().firstChild(); child; child = child->tree().nextSibling()) {
-        if (child->isLocalFrame())
-            childFrames.append(toLocalFrame(child));
-    }
-
-    for (size_t i = 0; i < childFrames.size(); ++i)
-        childFrames[i]->sendOrientationChangeEvent();
-}
-
 void LocalFrame::setPrinting(bool printing, const FloatSize& pageSize, const FloatSize& originalPageSize, float maximumShrinkRatio)
 {
     // In setting printing, we should not validate resources already cached for the document.
     // See https://bugs.webkit.org/show_bug.cgi?id=43704
     ResourceCacheValidationSuppressor validationSuppressor(document()->fetcher());
 
     document()->setPrinting(printing);
     view()->adjustMediaTypeForPrinting(printing);
 
     document()->styleResolverChanged();
@@ skipping 449 matching lines @@
 LocalFrame* LocalFrame::localFrameRoot()
 {
     LocalFrame* curFrame = this;
     while (curFrame && curFrame->tree().parent() && curFrame->tree().parent()->isLocalFrame())
         curFrame = toLocalFrame(curFrame->tree().parent());
 
     return curFrame;
 }
 
 } // namespace WebCore