Revert 196331 "Move screen_orientation public headers to module ..."

trunk/public/platform/modules/screen_orientation/WebLockOrientationError.h

-// Copyright 2015 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 WebLockOrientationError_h
-#define WebLockOrientationError_h
-
-namespace blink {
-
-enum WebLockOrientationError {
-    // If locking isn't available on the platform.
-    WebLockOrientationErrorNotAvailable,
-
-    // If fullscreen is required to lock.
-    WebLockOrientationErrorFullScreenRequired,
-
-    // If another lock/unlock got called before that one ended.
-    WebLockOrientationErrorCanceled,
-};
-
-} // namespace blink
-
-#endif // WebLockOrientationError_h