GN + Android: support standalone .dex.jar output of Android libraries.

build/config/android/rules.gni

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//base/android/linker/config.gni")
 import("//build/config/android/config.gni")
 import("//build/config/android/internal_rules.gni")
 import("//tools/grit/grit_rule.gni")
 import("//tools/relocation_packer/config.gni")
 
@@ skipping 902 matching lines @@
 #     ease the gyp->gn conversion and will be removed in the future.
 #
 #   chromium_code: If true, extra analysis warning/errors will be enabled.
 #   jar_excluded_patterns: List of patterns of .class files to exclude from the
 #     final jar.
 #
 #   proguard_preprocess: If true, proguard preprocessing will be run. This can
 #     be used to remove unwanted parts of the library.
 #   proguard_config: Path to the proguard config for preprocessing.
 #
+#   dex_path: If set, the resulting .dex.jar file will be placed under this
+#     path.
+#   standalone_dex_path: If set, a standalone .dex.jar containing the code from
+#     the library and all dependencies will be placed under this path.
+#
 #
 # Example
 #   android_library("foo_java") {
 #     java_files = [
 #       "android/org/chromium/foo/Foo.java",
 #       "android/org/chromium/foo/FooInterface.java",
 #       "android/org/chromium/foo/FooService.java",
 #     ]
 #     deps = [
 #       ":bar_java"
@@ skipping 41 matching lines @@
     }
     if (defined(invoker.testonly)) {
       testonly = invoker.testonly
     }
     if (defined(invoker.visibility)) {
       visibility = invoker.visibility
     }
     if (defined(invoker.dex_path)) {
       dex_path = invoker.dex_path
     }
+    if (defined(invoker.standalone_dex_path)) {
+      standalone_dex_path = invoker.standalone_dex_path
+    }
 
     supports_android = true
     requires_android = true
 
     if (!defined(jar_excluded_patterns)) {
       jar_excluded_patterns = []
     }
     jar_excluded_patterns += [
       "*/R.class",
       "*/R##*.class",
@@ skipping 294 matching lines @@
     deps = [
       ":${_template_name}__java",
     ]
     sources = [
       jar_path,
     ]
     inputs = [
       _build_config,
     ]
     output = final_dex_path
-    dex_arg_key = "${_rebased_build_config}:apk_dex:dependency_dex_files"
+    dex_arg_key = "${_rebased_build_config}:final_dex:dependency_dex_files"
     args = [ "--inputs=@FileArg($dex_arg_key)" ]
   }
 
   if (_native_libs != []) {
     action("${_template_name}__prepare_native") {
       script = "//build/android/gyp/pack_arm_relocations.py"
       packed_libraries_dir = "$_native_libs_dir/$android_app_abi"
       depfile = "$target_gen_dir/$target_name.d"
       outputs = [ depfile ]
       inputs = [
@@ skipping 358 matching lines @@
 # TODO(GYP): implement this.
 template("uiautomator_test") {
   if (defined(invoker.testonly)) {
     testonly = invoker.testonly
   }
   assert(target_name != "")
   assert(invoker.deps != [] || true)
   group(target_name) {
   }
 }