[test] Limit "unittests" suite to default variant.

This changes the unittests suite to be run in only the default variant,
because unit tests are (and should be) written to be independent from
global flags.

R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1067863007

Cr-Commit-Position: refs/heads/master@{#28054}

diff --git a/tools/testrunner/local/testsuite.py b/tools/testrunner/local/testsuite.py
index 7fea13a..0b38d8c 100644 (file)
--- a/tools/testrunner/local/testsuite.py
+++ b/tools/testrunner/local/testsuite.py
@@ -272,5 +272,8 @@ class GoogleTestSuite(TestSuite):
             ["--gtest_print_time=0"] +
             context.mode_flags)
 
+  def VariantFlags(self, testcase, default_flags):
+    return [[]]
+
   def shell(self):
     return self.name