Add page.CanRunOnBrowser. Add WebGL check for tough_webgl_cases pages

tools/perf/page_sets/tough_webgl_cases.py

Index: tools/perf/page_sets/tough_webgl_cases.py
diff --git a/tools/perf/page_sets/tough_webgl_cases.py b/tools/perf/page_sets/tough_webgl_cases.py
index 034e88ac2d455d04dc3cdd0c32c10d39352324ec..3263eb7e8bbf5dfdeb74a9297f3d0d46ad6d4b23 100644
--- a/tools/perf/page_sets/tough_webgl_cases.py
+++ b/tools/perf/page_sets/tough_webgl_cases.py
@@ -1,6 +1,8 @@
 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
+import logging
+
 # pylint: disable=W0401,W0614
 from telemetry.page.actions.all_page_actions import *
 from telemetry.page import page as page_module
@@ -13,6 +15,12 @@ class ToughWebglCasesPage(page_module.Page):
     super(ToughWebglCasesPage, self).__init__(url=url, page_set=page_set)
     self.archive_data_file = 'data/tough_webgl_cases.json'
 
+  def CanRunOnBrowser(self, browser_info):
+    if not browser_info.HasWebGLSupport():
+      logging.warning('Browser does not support webgl, skipping test')
+      return False
+    return True
+
   def RunNavigateSteps(self, action_runner):
     action_runner.NavigateToPage(self)
     action_runner.RunAction(WaitAction(