Add tests for TreeHugger Presubmit.

common_time and mediadrm only has OWNERS file
for now, so no TEST_MAPPING FILE is added.

Bug: 155319496

Test: atest
Change-Id: Ie4d27837a3acdc554c4c4f259ad1ed25c1088e5b
diff --git a/include/media/TEST_MAPPING b/include/media/TEST_MAPPING
new file mode 100644
index 0000000..ac697da
--- /dev/null
+++ b/include/media/TEST_MAPPING
@@ -0,0 +1,7 @@
+{
+  "imports": [
+    {
+      "path": "frameworks/av/include/drm"
+    }
+  ]
+}