Mark wpt/encoding/textdecoder-fatal-single-byte.any.html as timeout

TBR=jsbell@chromium.org
NOTRY=true

Bug: 873570
Change-Id: I1cf6d4ca729e7fdb7c14bf5b5288dc84de408f3c
Reviewed-on: https://chromium-review.googlesource.com/1172228Reviewed-by: Makoto Shimazu <shimazu@chromium.org>
Commit-Queue: Makoto Shimazu <shimazu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582518}

third_party/WebKit/LayoutTests/MSANExpectations

@@ -32,6 +32,8 @@ crbug.com/704360 [ Linux ] shapedetection/detection-HTMLVideoElement.html [ Time
 crbug.com/704360 [ Linux ] shapedetection/detection-HTMLCanvasElement.html [ Timeout Pass ]
 crbug.com/704360 [ Linux ] shapedetection/detection-ImageData.html [ Timeout Pass ]
 
+crbug.com/873570 [ Linux ] external/wpt/encoding/textdecoder-fatal-single-byte.any.html [ Timeout Pass ]
+
 # Times out on MSAN
 crbug.com/462190 [ Linux ] inspector-protocol/heap-profiler/heap-samples-in-snapshot.js [ Timeout ]
 crbug.com/462190 [ Linux ] inspector-protocol/heap-profiler/heap-snapshot-merged-nodes.js [ Timeout ]