browsers tests cause runtime errors

R=nweiz@google.com

Review URL: https://codereview.chromium.org//951393002
diff --git a/.status b/.status
index ff095a2..ddb02ed 100644
--- a/.status
+++ b/.status
@@ -13,3 +13,6 @@
 # Only run tests from the build directory, since we don't care about the
 # difference between transformed an untransformed code.
 test/*: Skip
+
+[ $browser ]
+*: RuntimeError # new unittest package does not support browser tests