Bug 1460230 [wpt PR 10915] - Update wpt metadata, a=testonly

wpt-pr: 10915
wpt-type: metadata

testing/web-platform/meta/encoding/big5-encoder.html.ini

@@ -0,0 +1,13 @@
+[big5-encoder.html]
+  [big5 encoder: Highest-pointer BMP character excluded from encoder]
+    expected: FAIL
+
+  [big5 encoder: Highest-pointer character excluded from encoder]
+    expected: FAIL
+
+  [big5 encoder: The canonical BMP test character that is not in the index]
+    expected: FAIL
+
+  [big5 encoder: The canonical astral test character that is not in the index]
+    expected: FAIL
+

testing/web-platform/meta/encoding/gbk-encoder.html.ini

@@ -0,0 +1,4 @@
+[gbk-encoder.html]
+  [gbk encoder: poo]
+    expected: FAIL
+

testing/web-platform/meta/encoding/iso-2022-jp-encoder.html.ini

@@ -0,0 +1,4 @@
+[iso-2022-jp-encoder.html]
+  [iso-2022-jp encoder: U+FFFD]
+    expected: FAIL
+

testing/web-platform/meta/xhr/open-url-encoding.htm.ini

@@ -0,0 +1,4 @@
+[open-url-encoding.htm]
+  [lone surrogate]
+    expected: FAIL
+