Add timeout to failure mode for wasm-streaming-url.js

TBR=thibaudm@chromium.org

Bug: 1107923
Change-Id: I73a80f3986a8b4ee7e655c42057a6d47c014a737
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2313960Reviewed-by: James MacLean <wjmaclean@chromium.org>
Commit-Queue: James MacLean <wjmaclean@chromium.org>
Cr-Commit-Position: refs/heads/master@{#790992}

third_party/blink/web_tests/TestExpectations

@@ -6850,9 +6850,7 @@ crbug.com/1107634 [ Mac10.10 ] virtual/text-antialias/selection/select-ligature-
 crbug.com/1107634 [ Mac10.10 ] virtual/text-antialias/selection/select-ligature-vertical-2.html [ Pass Failure ]
 crbug.com/1107634 [ Mac10.10 ] virtual/text-antialias/selection/select-ligature-vertical-3.html [ Pass Failure ]
 
-# Sheriff 2020-07-21
-crbug.com/1107923 [ Mac10.15 ] inspector-protocol/debugger/wasm-streaming-url.js [ Pass Failure ]
-
 # Sheriff 2020-07-22
 crbug.com/1107722 [ Mac ] http/tests/devtools/tracing/timeline-js/timeline-script-id.js [ Pass Failure ]
 crbug.com/1107722 [ Mac ] virtual/threaded/http/tests/devtools/tracing/timeline-misc/timeline-event-causes.js [ Pass Failure ]
+crbug.com/1107923 [ Mac10.15 ] inspector-protocol/debugger/wasm-streaming-url.js [ Pass Timeout Failure ]