Make change and version bump to r_aml_300802300 for mainline module file: manifest.json

Change-Id: I834721a01ffb35d53181396922fe25bed9baad45
diff --git a/manifest.json b/manifest.json
index bf10419..d8e4e39 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,4 +1,4 @@
 {
   "name": "com.android.sdkext",
-  "version": 300802200
+  "version": 300802300
 }