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

Source/web/WebLocalFrameImpl.cpp

Index: Source/web/WebLocalFrameImpl.cpp
diff --git a/Source/web/WebLocalFrameImpl.cpp b/Source/web/WebLocalFrameImpl.cpp
index ba48c3cb59054cfdc24b06f04a1bbe9967519abf..5ff02bd49e5a2921711f241ab2e908aa7e5cc975 100644
--- a/Source/web/WebLocalFrameImpl.cpp
+++ b/Source/web/WebLocalFrameImpl.cpp
@@ -1374,8 +1374,16 @@ void WebLocalFrameImpl::resetMatchCount()
 
 void WebLocalFrameImpl::sendOrientationChangeEvent()
 {
-    if (frame())
-        frame()->sendOrientationChangeEvent();
+    if (!frame())
+        return;
+
+    // Screen Orientation API
+    if (ScreenOrientationController::from(*frame()))

[sof, 2014/07/09 07:02:53]

Would be preferable (to my eyes) to create a binding for
ScreenOrientationController and use it.

+        ScreenOrientationController::from(*frame())->notifyOrientationChanged();
+
+    // Legacy window.orientation API.
+    if (frame()->domWindow())
+        frame()->domWindow()->dispatchEvent(Event::create(EventTypeNames::orientationchange));
 }
 
 void WebLocalFrameImpl::dispatchMessageEventWithOriginCheck(const WebSecurityOrigin& intendedTargetOrigin, const WebDOMEvent& event)
@@ -1536,9 +1544,9 @@ void WebLocalFrameImpl::setWebCoreFrame(PassRefPtr<WebCore::LocalFrame> frame)
         provideGeolocationTo(*m_frame, m_geolocationClientProxy.get());
         m_geolocationClientProxy->setController(GeolocationController::from(m_frame.get()));
         provideMIDITo(*m_frame, MIDIClientProxy::create(m_client ? m_client->webMIDIClient() : 0));
-        if (RuntimeEnabledFeatures::screenOrientationEnabled())
-            ScreenOrientationController::provideTo(*m_frame, m_client ? m_client->webScreenOrientationClient() : 0);
         provideLocalFileSystemTo(*m_frame, LocalFileSystemClient::create());
+
+        ScreenOrientationController::provideTo(*m_frame, m_client ? m_client->webScreenOrientationClient() : 0);
     }
 }