Implement Promise.prototype.then and Promise.prototype.catch

LayoutTests/fast/js/Promise-catch-expected.txt

Index: LayoutTests/fast/js/Promise-catch-expected.txt
diff --git a/LayoutTests/fast/js/Promise-catch-expected.txt b/LayoutTests/fast/js/Promise-catch-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..597d2ce58a22d94000b60296a95daf69a542815a
--- /dev/null
+++ b/LayoutTests/fast/js/Promise-catch-expected.txt
@@ -0,0 +1,18 @@
+Test Promise.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+PASS thisInInit === firstPromise is true
+PASS firstPromise instanceof Promise is true
+PASS secondPromise instanceof Promise is true
+PASS firstPromise.catch(null) threw exception TypeError: rejectCallback must be a function or undefined.
+PASS firstPromise.catch(37) threw exception TypeError: rejectCallback must be a function or undefined.
+PASS thisInFulfillCallback === firstPromise is false
+PASS thisInFulfillCallback === secondPromise is true
+PASS result is "hello"
+PASS result is "bye"
+PASS fulfilled
+PASS successfullyParsed is true
+
+TEST COMPLETE
+