Move recipe engine to third_party/recipe_engine.

third_party/recipe_engine/expect_tests/main.py

Index: third_party/recipe_engine/expect_tests/main.py
diff --git a/scripts/slave/unittests/expect_tests/main.py b/third_party/recipe_engine/expect_tests/main.py
similarity index 97%
rename from scripts/slave/unittests/expect_tests/main.py
rename to third_party/recipe_engine/expect_tests/main.py
index 66392e1f17e641f4b3227adf7349d244410487e2..83800de232ab3d598c2facbb1e24af6ee2dd3a5a 100644
--- a/scripts/slave/unittests/expect_tests/main.py
+++ b/third_party/recipe_engine/expect_tests/main.py
@@ -121,7 +121,7 @@ def _parse_args(args, test_gen):
   return opts
 
 
-def main(name, test_gen, cover_branches=False, args=None):
+def main(name, test_gen, cover_branches=False, cover_omit=None, args=None):
   """Entry point for tests using expect_tests.
 
   Example:
@@ -155,7 +155,7 @@ def main(name, test_gen, cover_branches=False, args=None):
 
     cover_ctx.cleanup()
     if not killed and not opts.test_glob:
-      if not cover_ctx.report(opts.verbose):
+      if not cover_ctx.report(verbose=opts.verbose, omit=cover_omit):
         sys.exit(2)
 
     sys.exit(error or killed)