Add Vibration API layout tests that inspect internal state.

LayoutTests/vibration/navigator-vibration-expected.txt

Index: LayoutTests/vibration/navigator-vibration-expected.txt
diff --git a/LayoutTests/vibration/navigator-vibration-expected.txt b/LayoutTests/vibration/navigator-vibration-expected.txt
deleted file mode 100644
index bb353758d529dc0313ed50c97f8a80b87e1cb1b0..0000000000000000000000000000000000000000
--- a/LayoutTests/vibration/navigator-vibration-expected.txt
+++ /dev/null
@@ -1,21 +0,0 @@
-Test for the Vibration API.
-
-On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
-
-
-PASS navigator.vibrate(0); is true
-PASS navigator.vibrate([]); is true
-PASS navigator.vibrate(1); is true
-PASS navigator.vibrate([1, 2]); is true
-PASS navigator.vibrate([1, 2, 3]); is true
-PASS navigator.vibrate(10000); is true
-PASS navigator.vibrate(10001); is true
-PASS navigator.vibrate(-1); is true
-PASS var p = []; for (var i = 0; i < 99; i++) p[i] = 1; navigator.vibrate(p); is true
-PASS var p = []; for (var i = 0; i < 100; i++) p[i] = 1; navigator.vibrate(p); is true
-PASS navigator.vibrate(); threw exception TypeError: Failed to execute 'vibrate' on 'Navigator': 1 argument required, but only 0 present..
-PASS navigator.vibrate([1], [2]); threw exception TypeError: Type error.
-PASS successfullyParsed is true
-
-TEST COMPLETE
-