Disable smoothness.tough_webgl_cases

NOTRY=True
NOTREECHECKS=True

BUG=373812

Review URL: https://codereview.chromium.org/282383002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@271053 0039d316-1c4b-4281-b951-d872f2087c98

tools/perf/benchmarks/smoothness.py

@@ -22,6 +22,7 @@ class SmoothnessToughCanvasCases(test.Test):
   page_set = 'page_sets/tough_canvas_cases.py'
 
 
+@test.Disabled('linux', 'mac', 'win')  # crbug.com/373812
 class SmoothnessToughWebGLCases(test.Test):
   test = smoothness.Smoothness
   page_set = 'page_sets/tough_webgl_cases.py'