Make change and version bump to r_aml_300801800 for mainline module file: manifest.json

Change-Id: I6c43f0f5474f1f7d7d839d0cf6439938d864517a
diff --git a/manifest.json b/manifest.json
index 03d2268..106f636 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,4 +1,4 @@
 {
   "name": "com.android.sdkext",
-  "version": 300801700
+  "version": 300801800
 }