Add support for 'allow-orientation-lock' sandboxing directive

Source/modules/screen_orientation/ScreenOrientation.h

Index: Source/modules/screen_orientation/ScreenOrientation.h
diff --git a/Source/modules/screen_orientation/ScreenOrientation.h b/Source/modules/screen_orientation/ScreenOrientation.h
index aaae462c2dda426426eabab804ccfbe66cd6df44..72e04c8a9ebfff62114a4e60e05b693ced034bc6 100644
--- a/Source/modules/screen_orientation/ScreenOrientation.h
+++ b/Source/modules/screen_orientation/ScreenOrientation.h
@@ -16,6 +16,7 @@
 namespace WebCore {
 
 class Document;
+class ExceptionState;
 class Screen;
 
 class ScreenOrientation FINAL : public NoBaseWillBeGarbageCollectedFinalized<ScreenOrientation>, public WillBeHeapSupplement<Screen>, DOMWindowProperty {
@@ -25,7 +26,7 @@ public:
     virtual ~ScreenOrientation();
 
     static const AtomicString& orientation(Screen&);
-    static bool lockOrientation(Screen&, const AtomicString& orientation);
+    static bool lockOrientation(Screen&, const AtomicString& orientation, ExceptionState&);
     static void unlockOrientation(Screen&);
 
     virtual void trace(Visitor* visitor) OVERRIDE { WillBeHeapSupplement<Screen>::trace(visitor); }