Revert "Disable failing wasm stories"

This reverts commit b8b2dcd2.

Reason for revert: Problem has since been fixed.

Original change's description:
> Disable failing wasm stories
>
> NOTRY=true
> TBR=nednguyen@chromium.org
> CC=​bradnelson@chromium.org
>
> Bug: 840935
> Change-Id: I99ec329b99822a800d70da48dcea4a085fe71e56
> Reviewed-on: https://chromium-review.googlesource.com/1050577
> Reviewed-by: Charlie Andrews <charliea@chromium.org>
> Commit-Queue: Charlie Andrews <charliea@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#556924}

TBR=nednguyen@google.com,charliea@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

NOTRY=true
TBR=nednguyen@chromium.org

Bug: 840935
Change-Id: If27b317e19ae8bfa876b16338102a181868c69f4
Reviewed-on: https://chromium-review.googlesource.com/1057365
Commit-Queue: Charlie Andrews <charliea@chromium.org>
Reviewed-by: Charlie Andrews <charliea@chromium.org>
Cr-Commit-Position: refs/heads/master@{#558297}

tools/perf/expectations.config

@@ -428,8 +428,6 @@ crbug.com/829161 [ Mac ] v8.runtime_stats.top_25/https://www.google.de/search?q=
 [ Android_One ] wasm/WasmSpaceBuggy [ Skip ]
 crbug.com/814012 [ Mac ] wasm/AsmJsZenGarden [ Skip ]
 crbug.com/814012 [ Win ] wasm/AsmJsZenGarden [ Skip ]
-crbug.com/840935 [ All ] wasm/WasmStylizedRenderer [ Skip ]
-crbug.com/840935 [ All ] wasm/WasmSunTemple [ Skip ]
 
 ##### Perf FYI benchmarks go after here #####
 # Benchmark: loading.desktop.network_service