Rebaseline two canvas tests after GPU blur rect change

Bug: 990918
Change-Id: I01625c93fa7f901414d59b80c7d78abb93ce68ca
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1756149Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Cr-Commit-Position: refs/heads/master@{#687379}

third_party/blink/web_tests/TestExpectations

@@ -5200,10 +5200,6 @@ crbug.com/766404 [ Mac ] plugins/keyboard-events.html [ Pass Failure ]
 # This was previously skipped on Windows in the section for crbug.com/757165
 crbug.com/775957 virtual/gpu/fast/canvas/canvas-incremental-repaint.html [ Skip ]
 
-# Canvas tests that are affected by change to Skia GPU rect shadow rendering.
-crbug.com/990918 virtual/gpu/fast/canvas/canvas-shadow-source-in.html [ Pass Failure ]
-crbug.com/990918 virtual/gpu/fast/canvas/canvas-composite-shadow.html [ Pass Failure ]
-
 # Sheriff failures 2017-09-21
 crbug.com/767469 http/tests/navigation/start-load-during-provisional-loader-detach.html [ Pass Failure ]
 crbug.com/767469 virtual/blink-cors/http/tests/navigation/start-load-during-provisional-loader-detach.html [ Pass Failure ]