Move screen_orientation public headers to module directory.

public/platform/WebLockOrientationCallback.h

Index: public/platform/WebLockOrientationCallback.h
diff --git a/public/platform/WebLockOrientationCallback.h b/public/platform/WebLockOrientationCallback.h
index 75d0bcdbbc9fa6191b7324d633c8c49d36e0bcaa..2cb85e7b9bf59519f7d2853767f9aaaa8e95ff75 100644
--- a/public/platform/WebLockOrientationCallback.h
+++ b/public/platform/WebLockOrientationCallback.h
@@ -2,27 +2,4 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef WebLockOrientationCallback_h
-#define WebLockOrientationCallback_h
-
-#include "public/platform/WebLockOrientationError.h"
-#include "public/platform/WebScreenOrientationType.h"
-
-namespace blink {
-
-// WebScreenOrientationType is an interface to be used by the embedder in order
-// to inform Blink when a screen lock operation has succeeded or failed.
-// A success notification comes with the new orientation angle and orientation
-// type and a failure notification comes with an information about the type of
-// failure.
-class WebLockOrientationCallback {
-public:
-    virtual ~WebLockOrientationCallback() { }
-
-    virtual void onSuccess() = 0;
-    virtual void onError(WebLockOrientationError) = 0;
-};
-
-} // namespace blink
-
-#endif // WebLockOrientationCallback_h
+#include "public/platform/modules/screen_orientation/WebLockOrientationCallback.h"