Add and update files from Android downstream branch to more closely match

Change-Id: If0ebdf44667202eaf73ec41f583092bf61e88b63
diff --git a/METADATA b/METADATA
new file mode 100644
index 0000000..d97975c
--- /dev/null
+++ b/METADATA
@@ -0,0 +1,3 @@
+third_party {
+  license_type: NOTICE
+}