Add initial Blink-side support for the Screen Orientation API

LayoutTests/screen_orientation/lockOrientation-bad-array-argument-expected.txt

Index: LayoutTests/screen_orientation/lockOrientation-bad-array-argument-expected.txt
diff --git a/LayoutTests/screen_orientation/lockOrientation-bad-array-argument-expected.txt b/LayoutTests/screen_orientation/lockOrientation-bad-array-argument-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..bfa45a91dd6e0605207929ebdcdc4dec349502cd
--- /dev/null
+++ b/LayoutTests/screen_orientation/lockOrientation-bad-array-argument-expected.txt
@@ -0,0 +1,20 @@
+Validates that lockOrientation() can take an array in argument.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS screen.orientation is "portrait-primary"
+PASS screen.lockOrientation(['portrait-primary', 'invalid-orientation']) is false
+PASS screen.lockOrientation(['portrait-primary', null]) is false
+PASS screen.lockOrientation(['portrait-primary', undefined]) is false
+PASS screen.lockOrientation(['portrait-primary', 123]) is false
+PASS screen.lockOrientation(['portrait-primary', window]) is false
+Faking device screen orientation change to 'landscape-primary'...
+PASS Received an 'orientationchange' event.
+PASS testEvent.type is "orientationchange"
+PASS orientationChangeCount is 1
+PASS screen.orientation is "landscape-primary"
+PASS successfullyParsed is true
+
+TEST COMPLETE
+