Add C++ CPU costs
diff --git a/src/boringssl/gen_build_yaml.py b/src/boringssl/gen_build_yaml.py
index 424912b..b635ee4 100755
--- a/src/boringssl/gen_build_yaml.py
+++ b/src/boringssl/gen_build_yaml.py
@@ -137,7 +137,8 @@
             'platforms': ['linux', 'mac', 'posix', 'windows'],
             'flaky': False,
             'language': 'c++',
-            'boringssl': True
+            'boringssl': True,
+            'cpu_cost': 1.0
           }
           for test in files['tests']
       ]