Remove the ability to lock to multiple orientations.

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 c8ba48bc810c09e309af56ad7a42a772510b453a..7e0d9d1033c3118d349559acf65b92df5811b0d3 100644
--- a/Source/modules/screen_orientation/ScreenOrientation.h
+++ b/Source/modules/screen_orientation/ScreenOrientation.h
@@ -11,7 +11,6 @@
 #include "platform/Supplementable.h"
 #include "platform/Timer.h"
 #include "public/platform/WebScreenOrientation.h"
-#include "wtf/Vector.h"
 #include "wtf/text/AtomicString.h"
 #include "wtf/text/WTFString.h"
 
@@ -29,7 +28,6 @@ public:
     DEFINE_STATIC_ATTRIBUTE_EVENT_LISTENER(orientationchange);
 
     static const AtomicString& orientation(Screen&);
-    static bool lockOrientation(Screen&, const Vector<String>& orientations);
     static bool lockOrientation(Screen&, const AtomicString& orientation);
     static void unlockOrientation(Screen&);