Fix license_type: Contains GPL (with carve-outs)

See: http://go/android-license-checking-v2-lsc

Test: m all

Bug: 151953481
Bug: 151177513
Bug: 67772237

Exempt-From-Owner-Approval: janitorial work
Change-Id: I36b4a0dbf94cef1db601de53976db832ab150503
diff --git a/METADATA b/METADATA
new file mode 100644
index 0000000..4cef1b7
--- /dev/null
+++ b/METADATA
@@ -0,0 +1,4 @@
+third_party {
+  # would be NOTICE save for GPL in retrace/license.html
+  license_type: RESTRICTED
+}