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

Source/modules/screen_orientation/ScreenScreenOrientation.h

Index: Source/modules/screen_orientation/ScreenScreenOrientation.h
diff --git a/Source/modules/screen_orientation/ScreenScreenOrientation.h b/Source/modules/screen_orientation/ScreenScreenOrientation.h
deleted file mode 100644
index b8c442e5714af58798585f3e35f1ff1cb85288ce..0000000000000000000000000000000000000000
--- a/Source/modules/screen_orientation/ScreenScreenOrientation.h
+++ /dev/null
@@ -1,36 +0,0 @@
-// 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 ScreenScreenOrientation_h
-#define ScreenScreenOrientation_h
-
-#include "platform/Supplementable.h"
-
-namespace WebCore {
-
-class ScreenOrientation;
-class Screen;
-class ScriptState;
-
-class ScreenScreenOrientation FINAL :
-    public NoBaseWillBeGarbageCollectedFinalized<ScreenScreenOrientation>,
-    public WillBeHeapSupplement<Screen> {
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(ScreenScreenOrientation);
-public:
-    static ScreenScreenOrientation& from(Screen&);
-    virtual ~ScreenScreenOrientation();
-
-    static ScreenOrientation* orientation(ScriptState*, Screen&);
-
-    virtual void trace(Visitor*) OVERRIDE;
-
-private:
-    static const char* supplementName();
-
-    PersistentWillBeMember<ScreenOrientation> m_orientation;
-};
-
-} // namespace WebCore
-
-#endif // ScreenScreenOrientation_h