Unsuppress paint-command-log-nodes.html

Passed after fix landed in latest Skia roll:
  http://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux/builds/36066/steps/webkit_tests/logs/stdio

BUG=406425

Review URL: https://codereview.chromium.org/501103003

Cr-Commit-Position: refs/heads/master@{#291741}

skia/skia_test_expectations.txt

@@ -48,7 +48,4 @@
 #
 # START OVERRIDES HERE
 
-# Suppressed while we investigate a fix.
-crbug.com/406425 virtual/implsidepainting/inspector/tracing/paint-command-log-nodes.html [ Failure Pass ]
-
 # END OVERRIDES HERE (this line ensures that the file is newline-terminated)