Re-enable webp-no-color-profile-lossy.html on Win after rebaseline

With crrev.com/c/1700112, the test was refactored to (hopefully)
eliminate flakiness by deterministically decoding WebP images in YUV
or RGB.

Bug: 981137
Change-Id: Ieb49b9562d5a1e1d048ab04326eb777b77d88b15
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1762338
Auto-Submit: Madeleine Barowsky <mbarowsky@chromium.org>
Reviewed-by: Evan Stade <estade@chromium.org>
Commit-Queue: Evan Stade <estade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#688758}

third_party/blink/web_tests/TestExpectations

@@ -6339,7 +6339,6 @@ crbug.com/979593 [ Linux Win ] virtual/omt-worker-fetch/external/wpt/service-wor
 
 # Sheriff 2019-07-03
 crbug.com/979490 [ Linux Win ] virtual/omt-worker-fetch/external/wpt/workers/modules/dedicated-worker-import-referrer.html [ Pass Timeout ]
-crbug.com/981137 [ Win ] virtual/gpu-rasterization/images/yuv-decode-eligible/webp-no-color-profile-lossy.html [ Pass Failure ]
 crbug.com/981210 external/wpt/web-animations/interfaces/Animation/oncancel.html [ Pass Failure ]
 
 # Sheriff 2019-07-04