Separate tethering build target to Tethering and TetheringNext

To avoid much code diverge between aosp and its downstream, we need to
separate the build target which build with latest stable sdk in release
branch and build with unfreeze sdk in dev branch. So we could use new
API with APIshim in dev branch without impacting release branch.

BYPASS_INCLUSIVE_LANGUAGE_REASON=the wording is the file name of
existing file.
Bug: 204265450
Test: m
Change-Id: I949fd83b1eed7461e0b381193b190cf15080bc1b

Tethering/Android.bp

@@ -19,9 +19,13 @@ package {
 }
 
 java_defaults {
-    name: "TetheringAndroidLibraryDefaults",
+    name: "TetheringApiLevel",
     sdk_version: "module_current",
     min_sdk_version: "30",
+}
+
+java_defaults {
+    name: "TetheringAndroidLibraryDefaults",
     srcs: [
         "apishim/**/*.java",
         "src/**/*.java",
@@ -30,7 +34,6 @@ java_defaults {
         ":services-tethering-shared-srcs",
     ],
     static_libs: [
-        "NetworkStackApiStableShims",
         "androidx.annotation_annotation",
         "modules-utils-build",
         "modules-utils-statemachine",
@@ -54,16 +57,35 @@ java_defaults {
     manifest: "AndroidManifestBase.xml",
 }
 
-// Build tethering static library, used to compile both variants of the tethering.
+// build tethering static library, used to compile both variants of the tethering.
 android_library {
     name: "TetheringApiCurrentLib",
-    defaults: ["TetheringAndroidLibraryDefaults"],
+    defaults: [
+        "TetheringAndroidLibraryDefaults",
+        "TetheringApiLevel"
+    ],
+    static_libs: [
+        "NetworkStackApiCurrentShims",
+    ],
+    apex_available: ["com.android.tethering"],
+}
+
+android_library {
+    name: "TetheringApiStableLib",
+    defaults: [
+        "TetheringAndroidLibraryDefaults",
+        "TetheringApiLevel"
+    ],
+    static_libs: [
+        "NetworkStackApiStableShims",
+    ],
+    apex_available: ["com.android.tethering"],
 }
 
 // Due to b/143733063, APK can't access a jni lib that is in APEX (but not in the APK).
 cc_library {
     name: "libtetherutilsjni",
-    sdk_version: "current",
+    sdk_version: "30",
     apex_available: [
         "//apex_available:platform", // Used by InProcessTethering
         "com.android.tethering",
@@ -109,7 +131,6 @@ cc_library {
 // Common defaults for compiling the actual APK.
 java_defaults {
     name: "TetheringAppDefaults",
-    sdk_version: "module_current",
     privileged: true,
     jni_libs: [
         "libtetherutilsjni",
@@ -130,20 +151,34 @@ java_defaults {
 // Non-updatable tethering running in the system server process for devices not using the module
 android_app {
     name: "InProcessTethering",
-    defaults: ["TetheringAppDefaults"],
+    defaults: ["TetheringAppDefaults", "TetheringApiLevel"],
     static_libs: ["TetheringApiCurrentLib"],
     certificate: "platform",
     manifest: "AndroidManifest_InProcess.xml",
     // InProcessTethering is a replacement for Tethering
     overrides: ["Tethering"],
     apex_available: ["com.android.tethering"],
-    min_sdk_version: "30",
 }
 
-// Updatable tethering packaged as an application
+// Updatable tethering packaged for finalized API
 android_app {
     name: "Tethering",
-    defaults: ["TetheringAppDefaults"],
+    defaults: ["TetheringAppDefaults", "TetheringApiLevel"],
+    static_libs: ["TetheringApiStableLib"],
+    certificate: "networkstack",
+    manifest: "AndroidManifest.xml",
+    use_embedded_native_libs: true,
+    // The permission configuration *must* be included to ensure security of the device
+    required: [
+        "NetworkPermissionConfig",
+        "privapp_whitelist_com.android.networkstack.tethering",
+    ],
+    apex_available: ["com.android.tethering"],
+}
+
+android_app {
+    name: "TetheringNext",
+    defaults: ["TetheringAppDefaults", "TetheringApiLevel"],
     static_libs: ["TetheringApiCurrentLib"],
     certificate: "networkstack",
     manifest: "AndroidManifest.xml",
@@ -154,7 +189,6 @@ android_app {
         "privapp_whitelist_com.android.networkstack.tethering",
     ],
     apex_available: ["com.android.tethering"],
-    min_sdk_version: "30",
 }
 
 sdk {

Tethering/apex/Android.bp

@@ -43,7 +43,7 @@ apex {
     ],
     apps: [
         "ServiceConnectivityResources",
-        "Tethering",
+        "TetheringNext",
     ],
     prebuilts: ["current_sdkinfo"],
     manifest: "manifest.json",