Import cobalt 25.master.0.1034729
diff --git a/base/metrics/DIR_METADATA b/base/metrics/DIR_METADATA
new file mode 100644
index 0000000..e99cb75
--- /dev/null
+++ b/base/metrics/DIR_METADATA
@@ -0,0 +1 @@
+mixins: "//base/metrics/COMMON_METADATA"