DO NOT MERGE Add mock filegroups to deal with merge conflict problem

This is a preparing CL to cherry-pick netstats jni from git_master to
aosp. Define some mock files to deal with merge conflict problem between aosp
and sc-mainline-prod. The filegroups framework-connectivity-tiramisu-jni-sources
and services.connectivity-netstats-jni-sources is located in
framework/base which do not open for development in sc-mainline-prod.

Bug: 197717846
Test: m libservice-connectivity
Test: m com.google.android.Tethering
Ignore-AOSP-First: this is used to prevent merge conflict.
Change-Id: I33e0d699086c87ce8e940036c9a52908bbbcf6c5
diff --git a/buildstubs-t/Android.bp b/buildstubs-t/Android.bp
index 7af320f..396827f 100644
--- a/buildstubs-t/Android.bp
+++ b/buildstubs-t/Android.bp
@@ -39,7 +39,23 @@
 
 filegroup {
     name: "services.connectivity-netstats-jni-sources",
-    srcs: [],
+    srcs: [
+        "stubs-src-jni/mock_com_android_server_net_NetworkStatsFactory.cpp",
+        "stubs-src-jni/mock_com_android_server_net_NetworkStatsService.cpp",
+    ],
+    visibility: [
+        "//packages/modules/Connectivity:__subpackages__",
+    ],
+}
+
+filegroup {
+    name: "framework-connectivity-tiramisu-jni-sources",
+    srcs: [
+        "stubs-src-jni/mock_android_net_TrafficStats.cpp",
+    ],
+    visibility: [
+        "//packages/modules/Connectivity:__subpackages__",
+    ],
 }
 
 // Empty replacement for framework-connectivity-tiramisu.impl and stubs,