Remove the ability to lock to multiple orientations.

Source/modules/screen_orientation/ScreenOrientation.cpp

Index: Source/modules/screen_orientation/ScreenOrientation.cpp
diff --git a/Source/modules/screen_orientation/ScreenOrientation.cpp b/Source/modules/screen_orientation/ScreenOrientation.cpp
index 1894c1651cfe53cc61abc7b787132715fa9b22ad..c3599c158db9445aea71d29f3973b8deb0c35ca1 100644
--- a/Source/modules/screen_orientation/ScreenOrientation.cpp
+++ b/Source/modules/screen_orientation/ScreenOrientation.cpp
@@ -130,21 +130,6 @@ const AtomicString& ScreenOrientation::orientation(Screen& screen)
     return orientationToString(controller.orientation());
 }
 
-bool ScreenOrientation::lockOrientation(Screen& screen, const Vector<String>& orientationsVector)
-{
-    blink::WebScreenOrientations orientations = 0;
-    for (size_t i = 0; i < orientationsVector.size(); ++i) {
-        blink::WebScreenOrientations currentOrientation = stringToOrientations(AtomicString(orientationsVector[i]));
-        if (!currentOrientation)
-            return false;
-        orientations |= currentOrientation;
-    }
-    if (!orientations)
-        return false;
-    ScreenOrientation::from(screen).lockOrientationAsync(orientations);
-    return true;
-}
-
 bool ScreenOrientation::lockOrientation(Screen& screen, const AtomicString& orientationString)
 {
     blink::WebScreenOrientations orientations = stringToOrientations(orientationString);