Add bp-based disting of android stubs

This used to be done in Make, but with bp-based dist now supporting
tags we can convert these java_library { hostdex: true } libraries
to dist their classes.jar rather than dex jar.

Bug: 161214753
Test: diff results of `m sdk dist`
Change-Id: Id54507e297b5c57d1ce58f14eb347e7661a5328d

StubLibraries.bp

@@ -311,6 +311,15 @@ java_defaults {
     compile_dex: true,
 }
 
+java_defaults {
+    name: "android_stubs_dists_default",
+    dist: {
+        targets: ["sdk", "win_sdk"],
+        tag: ".jar",
+        dest: "android.jar",
+    },
+}
+
 java_library_static {
     name: "android_monolith_stubs_current",
     srcs: [ ":api-stubs-docs" ],
@@ -345,7 +354,21 @@ java_library_static {
     name: "android_system_monolith_stubs_current",
     srcs: [ ":system-api-stubs-docs" ],
     static_libs: [ "private-stub-annotations-jar" ],
-    defaults: ["android_defaults_stubs_current"],
+    defaults: [
+        "android_defaults_stubs_current",
+        "android_stubs_dists_default",
+    ],
+    dist: {
+        dir: "apistubs/android/system",
+    },
+    dists: [
+        {
+            // Legacy dist path
+            targets: ["sdk", "win_sdk"],
+            tag: ".jar",
+            dest: "android_system.jar",
+        },
+    ],
 }
 
 java_library_static {
@@ -375,14 +398,34 @@ java_library_static {
     name: "android_test_stubs_current",
     srcs: [ ":test-api-stubs-docs" ],
     static_libs: [ "private-stub-annotations-jar" ],
-    defaults: ["android_defaults_stubs_current"],
+    defaults: [
+        "android_defaults_stubs_current",
+        "android_stubs_dists_default",
+    ],
+    dist: {
+        dir: "apistubs/android/test",
+    },
+    dists: [
+        {
+            // Legacy dist path
+            targets: ["sdk", "win_sdk"],
+            tag: ".jar",
+            dest: "android_test.jar",
+        },
+    ],
 }
 
 java_library_static {
     name: "android_module_lib_stubs_current",
     srcs: [ ":module-lib-api-stubs-docs-non-updatable" ],
-    defaults: ["android_defaults_stubs_current"],
+    defaults: [
+        "android_defaults_stubs_current",
+        "android_stubs_dists_default",
+    ],
     libs: ["sdk_system_29_android"],
+    dist: {
+        dir: "apistubs/android/module-lib",
+    },
 }
 
 java_library_static {

services/Android.bp

@@ -154,10 +154,14 @@ droidstubs {
 
 java_library {
     name: "android_system_server_stubs_current",
+    defaults: ["android_stubs_dists_default"],
     srcs: [":services-stubs.sources"],
     installable: false,
     static_libs: ["android_module_lib_stubs_current"],
     sdk_version: "none",
     system_modules: "none",
     java_version: "1.8",
+    dist: {
+        dir: "apistubs/android/system-server",
+    },
 }