Android Add java_group() template to GN

build/config/android/internal_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("//build/config/android/config.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build/config/zip.gni")
 import("//third_party/ijar/ijar.gni")
 
 assert(is_android)
@@ skipping 334 matching lines @@
 # build/android/gyp/util/build_utils.py:ExpandFileArgs
 template("write_build_config") {
   action(target_name) {
     set_sources_assignment_filter([])
     type = invoker.type
     build_config = invoker.build_config
 
     assert(type == "android_apk" || type == "java_library" ||
            type == "android_resources" || type == "deps_dex" ||
            type == "android_assets" || type == "resource_rewriter" ||
-           type == "java_binary")
+           type == "java_binary" || type == "group")
 
     deps = []
     forward_variables_from(invoker,
                            [
                              "deps",
                              "testonly",
                              "visibility",
                            ])
 
     script = "//build/android/gyp/write_build_config.py"
@@ skipping 22 matching lines @@
       "--possible-deps-configs=$rebase_possible_deps_configs",
       "--build-config",
       rebase_path(build_config, root_build_dir),
     ]
 
     is_java = type == "java_library" || type == "java_binary"
     is_apk = type == "android_apk"
     is_android_assets = type == "android_assets"
     is_android_resources = type == "android_resources"
     is_deps_dex = type == "deps_dex"
+    is_group = type == "group"
 
-    supports_android =
-        is_apk || is_android_assets || is_android_resources || is_deps_dex ||
-        (is_java && defined(invoker.supports_android) &&
-         invoker.supports_android)
+    supports_android = is_apk || is_android_assets || is_android_resources ||
+                       is_deps_dex || is_group ||
+                       (is_java && defined(invoker.supports_android) &&
+                        invoker.supports_android)
     requires_android =
         is_apk || is_android_assets || is_android_resources || is_deps_dex ||
         (is_java && defined(invoker.requires_android) &&
          invoker.requires_android)
 
     assert(!requires_android || supports_android,
            "requires_android requires" + " supports_android")
 
     # Mark these variables as used.
     assert(is_java || true)
     assert(is_apk || true)
     assert(is_android_resources || true)
     assert(is_deps_dex || true)
+    assert(is_group || true)
 
     if (is_java || is_apk) {
       args += [
         "--jar-path",
         rebase_path(invoker.jar_path, root_build_dir),
       ]
     }
 
     if (is_apk || is_deps_dex || (is_java && supports_android)) {
       args += [
@@ skipping 1715 matching lines @@
     ]
     args = [
       "--depfile",
       rebase_path(depfile, root_build_dir),
       "--script-output-path",
       rebase_path(generated_script, root_build_dir),
     ]
     args += test_runner_args
   }
 }