Make UTF-8 encoding of unpaired surrogates match Encoding standard

LayoutTests/fast/encoding/api/surrogate-pairs.html

Index: LayoutTests/fast/encoding/api/surrogate-pairs.html
diff --git a/LayoutTests/fast/encoding/api/surrogate-pairs.html b/LayoutTests/fast/encoding/api/surrogate-pairs.html
index 8be62c4076cc67cbdb6b9308f5a080a8bc27fcf0..bf768126f35b6990ee680addabda54d5892b5042 100644
--- a/LayoutTests/fast/encoding/api/surrogate-pairs.html
+++ b/LayoutTests/fast/encoding/api/surrogate-pairs.html
@@ -5,19 +5,18 @@
 description("Test invalid UTF-16 surrogate pairs with UTF-8 encoding");
 
 var badStrings = [
-    { input: 'abc123', expected: 'abc123' }, // Sanity check.
-    { input: '\ud800', expected: '\ufffd' }, // Surrogate half.
-    { input: '\udc00', expected: '\ufffd' }, // Surrogate half.
-    { input: 'abc\ud800def', expected: 'abc\ufffddef' }, // Surrogate half.
-    { input: 'abc\udc00def', expected: 'abc\ufffddef' }, // Surrogate half.
-    { input: '\udc00\ud800', expected: '\ufffd\ufffd' } // Wrong order.
+    { input: "'abc123'", expected: [97, 98, 99, 49, 50, 51] }, // Sanity check.

[jungshik at Google, 2013/08/30 00:39:27]

any reason to use decimal instead of hexadecimal? I can kinda decode a UTF-8
byte sequence in hexadecimal to a Unicode code point, but can't do that with
decimal. :-) 

[jsbell, 2013/08/30 00:43:56]

Agreed - I was copying/pasting from a JS console. Will fix.

+    { input: "'\\ud800'", expected: [239, 191, 189] }, // Surrogate half.
+    { input: "'\\udc00'", expected: [239, 191, 189] }, // Surrogate half.
+    { input: "'abc\\ud800123'", expected: [97, 98, 99, 239, 191, 189, 49, 50, 51] }, // Surrogate half.
+    { input: "'abc\\udc00123'", expected: [97, 98, 99, 239, 191, 189, 49, 50, 51] }, // Surrogate half.
+    { input: "'\\udc00\\ud800'",  expected: [239, 191, 189, 239, 191, 189] } // Wrong order.
 ];
 
 badStrings.forEach(
     function(t) {
-        evalAndLog("encoded = new TextEncoder('utf-8').encode(" + JSON.stringify(t.input) + ")");
-        evalAndLog("decoded = new TextDecoder('utf-8').decode(encoded)");
-        shouldBeEqualToString("decoded", t.expected);
+        evalAndLog("encoded = new TextEncoder('utf-8').encode(" + t.input + ")");
+        shouldBeEqualToString("JSON.stringify([].slice.call(encoded))", JSON.stringify(t.expected));
         debug("");
     });