Expose crypto.getRandomValues() to workers.

LayoutTests/crypto/worker-random-values-expected.txt

Index: LayoutTests/crypto/worker-random-values-expected.txt
diff --git a/LayoutTests/crypto/worker-random-values-expected.txt b/LayoutTests/crypto/worker-random-values-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..b6f4d70bc72dcb3511715e3a1a74da928f3d04d2
--- /dev/null
+++ b/LayoutTests/crypto/worker-random-values-expected.txt
@@ -0,0 +1,14 @@
+[Worker] Tests crypto.randomValues.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+Starting worker: resources/random-values.js
+PASS [Worker] 'crypto' in self is true
+PASS [Worker] 'getRandomValues' in self.crypto is true
+PASS [Worker] self.crypto.__proto__.hasOwnProperty('getRandomValues') is true
+PASS [Worker] matchingBytes < 100 is true
+PASS successfullyParsed is true
+
+TEST COMPLETE
+