Disable the pyauto process_count tests in the FULL suite on Windows.

BUG=94350
TEST=None

Review URL: http://codereview.chromium.org/7744049

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@98377 0039d316-1c4b-4281-b951-d872f2087c98

chrome/test/functional/PYAUTO_TESTS

@@ -413,6 +413,8 @@
       'gpu',
       # crbug.com/92446
       '-gpu.GpuTest.testGpuWithVideo',
+      # Preloaded extensions affect process count: crbug.com/94350
+      '-process_count',
     ],
 
     'mac': [