Disable spaceport on windows.

This test is super flaky since the tests were moved around, it's failing like 90% of the time.

NOTRY=true
BUG=166703

Review URL: https://codereview.chromium.org/102543005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238510 0039d316-1c4b-4281-b951-d872f2087c98

tools/perf/benchmarks/spaceport.py

@@ -57,7 +57,8 @@ class Spaceport(test.Test):
   """spaceport.io's PerfMarks benchmark."""
   test = _SpaceportMeasurement
 
-  enabled = sys.platform != 'darwin'
+  # crbug.com/166703: This test frequently times out on Windows.
+  enabled = sys.platform != 'darwin' and not sys.platform.startswith('win')
 
   def CreatePageSet(self, options):
     spaceport_dir = os.path.join(util.GetChromiumSrcDir(), 'chrome', 'test',