Port android_aapt_path, app_as_shared_lib and alternative_sdk to GN

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 c9388af8fd7d866b8ef653726d50607fa4ee1cd9..64b1d969b8764ad95fc48c65f7888e3684460de5 100644
--- a/build/config/android/rules.gni
+++ b/build/config/android/rules.gni
@@ -576,10 +576,10 @@ template("locale_pak_resources") {
 #   custom_package: java package for generated .java files.
 #   v14_skip: If true, don't run v14 resource generator on this. Defaults to
 #     false. (see build/android/gyp/generate_v14_compatible_resources.py)
-#
 #   shared_resources: If true make a resource package that can be loaded by a
 #     different application at runtime to access the package's resources.
-#
+#   app_as_shared_lib: If true make a resource package that can be loaded as
+#     both shared_resources and normal application.
 
 # Example:
 #   android_resources("foo_resources") {
@@ -635,6 +635,7 @@ template("android_resources") {
     deps = []
     forward_variables_from(invoker,
                            [
+                             "app_as_shared_lib",
                              "android_manifest",
                              "custom_package",
                              "deps",
@@ -1182,6 +1183,10 @@ template("android_java_prebuilt") {
 # and (possibly) native libraries.
 #
 # Variables
+#   alternative_android_sdk_jar: The alternative android sdk jar used in
+#     proguard.
+#   android_aapt_path: Android aapt tool to replace default one to build
+#     resource.
 #   android_manifest: Path to AndroidManifest.xml.
 #   android_manifest_dep: Target that generates AndroidManifest (if applicable)
 #   chromium_code: If true, extra analysis warning/errors will be enabled.
@@ -1409,6 +1414,8 @@ template("android_apk") {
   process_resources(process_resources_target) {
     forward_variables_from(invoker,
                            [
+                             "android_aapt_path",
+                             "app_as_shared_lib",
                              "include_all_resources",
                              "shared_resources",
                            ])
@@ -1540,6 +1547,7 @@ template("android_apk") {
     }
     _proguard_target = "${_template_name}__proguard"
     proguard(_proguard_target) {
+      forward_variables_from(invoker, [ "alternative_android_sdk_jar" ])
       deps = [
         ":$build_config_target",
         ":$java_target",
@@ -1669,6 +1677,8 @@ template("android_apk") {
     deps = []
     forward_variables_from(invoker,
                            [
+                             "android_aapt_path",
+                             "app_as_shared_lib",
                              "deps",
                              "extensions_to_not_compress",
                              "language_splits",
@@ -1761,6 +1771,7 @@ template("android_apk") {
       deps = []
       forward_variables_from(invoker,
                              [
+                               "android_aapt_path",
                                "deps",
                                "native_lib_placeholders",
                                "public_deps",