Screen Orientation: use OrientationLockType enum for lockOrientation().

LayoutTests/screen_orientation/lockOrientation-bad-array-argument.html

Index: LayoutTests/screen_orientation/lockOrientation-bad-array-argument.html
diff --git a/LayoutTests/screen_orientation/lockOrientation-bad-array-argument.html b/LayoutTests/screen_orientation/lockOrientation-bad-array-argument.html
index e255afdb09edf348cf7cae133754bd31c6f02e25..2d696be5d55e3ff079434fc1edb4d81ccab351f5 100644
--- a/LayoutTests/screen_orientation/lockOrientation-bad-array-argument.html
+++ b/LayoutTests/screen_orientation/lockOrientation-bad-array-argument.html
@@ -9,7 +9,7 @@ window.jsTestIsAsync = true;
 function onOrientationChangeEvent(ev) {
     testFailed("Unexpected 'orientationchange' event");
 }
- 
+
 function completeTest() {
     shouldBeEqualToString("screen.orientation", "portrait-primary");
     screen.unlockOrientation();
@@ -18,13 +18,17 @@ function completeTest() {
 
 screen.addEventListener("orientationchange", onOrientationChangeEvent);
 
+function typeErrorEnum(argStr) {
+  return "TypeError: Failed to execute 'lockOrientation' on 'Screen': parameter 1 ('" + argStr + "') is not a valid enum value.";
+}
+
 shouldBeEqualToString("screen.orientation", "portrait-primary");
 // Bad argument to lockOrientation(), we should not get locked.
-shouldBeFalse("screen.lockOrientation(['portrait-primary', 'invalid-orientation'])");
-shouldBeFalse("screen.lockOrientation(['portrait-primary', null])");
-shouldBeFalse("screen.lockOrientation(['portrait-primary', undefined])");
-shouldBeFalse("screen.lockOrientation(['portrait-primary', 123])");
-shouldBeFalse("screen.lockOrientation(['portrait-primary', window])");
+shouldThrow("screen.lockOrientation(['portrait-primary', 'invalid-orientation'])", "typeErrorEnum('portrait-primary,invalid-orientation')");
+shouldThrow("screen.lockOrientation(['portrait-primary', null])", "typeErrorEnum('portrait-primary,')");
+shouldThrow("screen.lockOrientation(['portrait-primary', undefined])", "typeErrorEnum('portrait-primary,')");
+shouldThrow("screen.lockOrientation(['portrait-primary', 123])", "typeErrorEnum('portrait-primary,123')");
+shouldThrow("screen.lockOrientation(['portrait-primary', window])", "typeErrorEnum('portrait-primary,[object Window]')");
 
 // Finish asynchronously to give events a chance to fire.
 setTimeout(completeTest, 0);