Move recipe engine to third_party/recipe_engine.

scripts/slave/recipe_modules/skia/api.py

Index: scripts/slave/recipe_modules/skia/api.py
diff --git a/scripts/slave/recipe_modules/skia/api.py b/scripts/slave/recipe_modules/skia/api.py
index 578e2b4fc86ec9f89c086da1cbd72b76887a9fda..11811d3896806cc904af5d73ec1e8d190a16a86d 100644
--- a/scripts/slave/recipe_modules/skia/api.py
+++ b/scripts/slave/recipe_modules/skia/api.py
@@ -3,10 +3,11 @@
 # found in the LICENSE file.
 
 
-from slave import recipe_api
-from slave import recipe_config_types
-from common.skia import builder_name_schema
-from common.skia import global_constants
+import re
+import os
+import sys
+
+from recipe_engine import recipe_api
 from . import android_flavor
 from . import chromeos_flavor
 from . import default_flavor
@@ -14,7 +15,13 @@ from . import ios_flavor
 from . import valgrind_flavor
 from . import xsan_flavor
 
-import re
+# TODO(luqui): Make this recipe stop depending on common so we can make it
+# independent of build/.
+sys.path.append(
+    os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(
+        os.path.abspath(__file__))))))
+from common.skia import builder_name_schema
+from common.skia import global_constants
 
 
 # The gsutil recipe API uses a different gsutil version which does not work