Implement Encoding API

LayoutTests/fast/encoding/api/surrogate-pairs-expected.txt

Index: LayoutTests/fast/encoding/api/surrogate-pairs-expected.txt
diff --git a/LayoutTests/fast/encoding/api/surrogate-pairs-expected.txt b/LayoutTests/fast/encoding/api/surrogate-pairs-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..77750a1cd737319d8d84fc1784f75ed9df5ff0e2
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+++ b/LayoutTests/fast/encoding/api/surrogate-pairs-expected.txt
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+Test invalid UTF-16 surrogate pairs with UTF-8 encoding
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+encoded = new TextEncoder('utf-8').encode("abc123")
+decoded = new TextDecoder('utf-8').decode(encoded)
+PASS decoded is "abc123"
+
+encoded = new TextEncoder('utf-8').encode("���")
+decoded = new TextDecoder('utf-8').decode(encoded)
+FAIL decoded should be �. Was ���.
+
+encoded = new TextEncoder('utf-8').encode("���")
+decoded = new TextDecoder('utf-8').decode(encoded)
+FAIL decoded should be �. Was ���.
+
+encoded = new TextEncoder('utf-8').encode("abc���def")
+decoded = new TextDecoder('utf-8').decode(encoded)
+FAIL decoded should be abc�def. Was abc���def.
+
+encoded = new TextEncoder('utf-8').encode("abc���def")
+decoded = new TextDecoder('utf-8').decode(encoded)
+FAIL decoded should be abc�def. Was abc���def.
+
+encoded = new TextEncoder('utf-8').encode("������")
+decoded = new TextDecoder('utf-8').decode(encoded)
+FAIL decoded should be ��. Was ������.
+
+PASS successfullyParsed is true
+
+TEST COMPLETE
+