GN(android): Add scripts & runtime logic for installing _managed apks

build/config/android/rules.gni

Index: build/config/android/rules.gni
diff --git a/build/config/android/rules.gni b/build/config/android/rules.gni
index 53330d100c5eea7bc34b4ff37067630aaa4edddb..5f6a4f1e14504a58d29992aaaa6222b4bfaa17b6 100644
--- a/build/config/android/rules.gni
+++ b/build/config/android/rules.gni
@@ -1382,6 +1382,10 @@ template("android_apk") {
           [ _final_apk_path ],
           "$root_build_dir/test.lib.java/{{source_name_part}}.jar")
   _dist_jar_path = _dist_jar_path_list[0]
+  _final_apk_path_no_ext_list =
+      process_file_template([ _final_apk_path ],
+                            "{{source_dir}}/{{source_name_part}}")
+  _final_apk_path_no_ext = _final_apk_path_no_ext_list[0]
 
   _native_libs = []
 
@@ -1484,6 +1488,8 @@ template("android_apk") {
       defined(invoker.create_abi_split) && invoker.create_abi_split
   _create_density_splits =
       defined(invoker.create_density_splits) && invoker.create_density_splits
+  _create_language_splits =
+      defined(invoker.language_splits) && invoker.language_splits != []
 
   # Help GN understand that _create_abi_split is not unused (bug in GN).
   assert(_create_abi_split || true)
@@ -1715,7 +1721,7 @@ template("android_apk") {
     dex_path = final_dex_path
     load_library_from_apk = _load_library_from_apk
     create_density_splits = _create_density_splits
-    if (defined(invoker.language_splits)) {
+    if (_create_language_splits) {
       language_splits = invoker.language_splits
     }
     if (defined(invoker.extensions_to_not_compress)) {
@@ -1772,12 +1778,11 @@ template("android_apk") {
 
     _apk_rule = "${_template_name}__split_apk_abi_${android_app_abi}"
     _final_deps += [ ":$_apk_rule" ]
-    _managed_final_deps += [ ":${_apk_rule}_managed" ]
+
+    # Don't add this to _managed_final_deps since for managed installs we skip
+    # abi splits altogether.
     create_apk(_apk_rule) {
-      _split_paths = process_file_template(
-              [ _final_apk_path ],
-              "{{source_dir}}/{{source_name_part}}-abi-${android_app_abi}.apk")
-      apk_path = _split_paths[0]
+      apk_path = "${_final_apk_path_no_ext}-abi-${android_app_abi}.apk"
       base_path = "$gen_dir/$_apk_rule"
 
       manifest_outputs = get_target_outputs(":${_manifest_rule}")
@@ -1799,6 +1804,41 @@ template("android_apk") {
     }
   }
 
+  _managed_create_script_rule_name = "${_template_name}__managed_script"
+  _managed_final_deps += [ ":${_managed_create_script_rule_name}" ]
+  action(_managed_create_script_rule_name) {
+    script = "//build/android/gyp/create_managed_install_script.py"
+    depfile = "$target_gen_dir/$target_name.d"
+
+    _generated_script_path =
+        "${root_out_dir}/bin/install_managed_${_template_name}"
+    outputs = [
+      depfile,
+      _generated_script_path,
+    ]
+
+    _rebased_apk_path_no_ext =
+        rebase_path(_final_apk_path_no_ext, root_build_dir)
+    _rebased_generated_script_path =
+        rebase_path(_generated_script_path, root_build_dir)
+    _rebased_depfile = rebase_path(depfile, root_build_dir)
+    args = [
+      "--apk-path=${_rebased_apk_path_no_ext}_managed.apk",
+      "--script-output-path=$_rebased_generated_script_path",
+      "--depfile=$_rebased_depfile",
+    ]
+    if (defined(_native_libs_dir)) {
+      _rebased_native_libs_dir = rebase_path(_native_libs_dir, root_build_dir)
+      args += [ "--lib-dir=$_rebased_native_libs_dir/$android_app_abi" ]
+    }
+    if (_create_density_splits) {
+      args += [ "--split=${_rebased_apk_path_no_ext}-density-*.apk" ]
+    }
+    if (_create_language_splits) {
+      args += [ "--split=${_rebased_apk_path_no_ext}-language-*.apk" ]
+    }
+  }
+
   group(target_name) {
     deps = _final_deps
     if (defined(invoker.data_deps)) {