Add a snapshot of flutter/engine/src/build to our sdk

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")
+
+assert(is_android)
+
+rebased_android_sdk = rebase_path(android_sdk, root_build_dir)
+rebased_android_sdk_root = rebase_path(android_sdk_root, root_build_dir)
+rebased_android_sdk_build_tools =
+    rebase_path(android_sdk_build_tools, root_build_dir)
+
+android_sdk_jar = "$android_sdk/android.jar"
+rebased_android_sdk_jar = rebase_path(android_sdk_jar, root_build_dir)
+android_aapt_path = "$rebased_android_sdk_build_tools/aapt"
+
+template("android_lint") {
+  set_sources_assignment_filter([])
+  if (defined(invoker.testonly)) {
+    testonly = invoker.testonly
+  }
+
+  jar_path = invoker.jar_path
+  android_manifest = invoker.android_manifest
+  java_files = invoker.java_files
+  base_path = "$target_gen_dir/$target_name"
+
+  action(target_name) {
+    script = "//build/android/gyp/lint.py"
+    result_path = base_path + "/result.xml"
+    config_path = base_path + "/config.xml"
+    suppressions_file = "//build/android/lint/suppressions.xml"
+    inputs = [
+               suppressions_file,
+               android_manifest,
+               jar_path,
+             ] + java_files
+
+    outputs = [
+      config_path,
+      result_path,
+    ]
+
+    rebased_java_files = rebase_path(java_files, root_build_dir)
+
+    args = [
+      "--lint-path=$rebased_android_sdk_root/tools/lint",
+      "--config-path",
+      rebase_path(suppressions_file, root_build_dir),
+      "--manifest-path",
+      rebase_path(android_manifest, root_build_dir),
+      "--product-dir=.",
+      "--jar-path",
+      rebase_path(jar_path, root_build_dir),
+      "--processed-config-path",
+      rebase_path(config_path, root_build_dir),
+      "--result-path",
+      rebase_path(result_path, root_build_dir),
+      "--java-files=$rebased_java_files",
+      "--enable",
+    ]
+
+    if (defined(invoker.deps)) {
+      deps = invoker.deps
+    }
+    if (defined(invoker.public_deps)) {
+      public_deps = invoker.public_deps
+    }
+    if (defined(invoker.data_deps)) {
+      data_deps = invoker.data_deps
+    }
+  }
+}
+
+template("findbugs") {
+  jar_path = invoker.jar_path
+
+  build_config = invoker.build_config
+
+  action(target_name) {
+    script = "//build/android/findbugs_diff.py"
+    depfile = "$target_gen_dir/$target_name.d"
+    result_path = "$target_gen_dir/$target_name/result.xml"
+    exclusions_file = "//build/android/findbugs_filter/findbugs_exclude.xml"
+
+    rebased_build_config = rebase_path(build_config, root_build_dir)
+
+    if (defined(invoker.deps)) {
+      deps = invoker.deps
+    }
+
+    if (defined(invoker.testonly)) {
+      testonly = invoker.testonly
+    }
+
+    inputs = [
+      "//build/android/pylib/utils/findbugs.py",
+      exclusions_file,
+      jar_path,
+    ]
+
+    outputs = [
+      depfile,
+      result_path,
+    ]
+
+    args = [
+      "--depfile",
+      rebase_path(depfile, root_build_dir),
+      "--exclude",
+      rebase_path(exclusions_file, root_build_dir),
+      "--auxclasspath-gyp",
+      "@FileArg($rebased_build_config:javac:classpath)",
+      "--output-file",
+      rebase_path(result_path, root_build_dir),
+      rebase_path(jar_path, root_build_dir),
+    ]
+  }
+}
+
+template("dex") {
+  set_sources_assignment_filter([])
+  if (defined(invoker.testonly)) {
+    testonly = invoker.testonly
+  }
+
+  assert(defined(invoker.output))
+  action(target_name) {
+    script = "//build/android/gyp/dex.py"
+    depfile = "$target_gen_dir/$target_name.d"
+    if (defined(invoker.sources)) {
+      sources = invoker.sources
+    }
+    outputs = [
+      depfile,
+      invoker.output,
+    ]
+    if (defined(invoker.inputs)) {
+      inputs = invoker.inputs
+    }
+
+    if (defined(invoker.deps)) {
+      deps = invoker.deps
+    }
+
+    rebased_output = rebase_path(invoker.output, root_build_dir)
+
+    args = [
+      "--depfile",
+      rebase_path(depfile, root_build_dir),
+      "--android-sdk-tools",
+      rebased_android_sdk_build_tools,
+      "--dex-path",
+      rebased_output,
+    ]
+
+    if (defined(invoker.no_locals) && invoker.no_locals) {
+      args += [ "--no-locals=1" ]
+    }
+
+    if (defined(invoker.args)) {
+      args += invoker.args
+    }
+
+    if (defined(invoker.sources)) {
+      args += rebase_path(invoker.sources, root_build_dir)
+    }
+  }
+}
+
+# Creates a zip archive of the inputs.
+# If base_dir is provided, the archive paths will be relative to it.
+template("zip") {
+  set_sources_assignment_filter([])
+  if (defined(invoker.testonly)) {
+    testonly = invoker.testonly
+  }
+
+  assert(defined(invoker.inputs))
+  assert(defined(invoker.output))
+
+  rebase_inputs = rebase_path(invoker.inputs, root_build_dir)
+  rebase_output = rebase_path(invoker.output, root_build_dir)
+  action(target_name) {
+    script = "//build/android/gn/zip.py"
+    depfile = "$target_gen_dir/$target_name.d"
+    inputs = invoker.inputs
+    outputs = [
+      depfile,
+      invoker.output,
+    ]
+    args = [
+      "--depfile",
+      rebase_path(depfile, root_build_dir),
+      "--inputs=$rebase_inputs",
+      "--output=$rebase_output",
+    ]
+    if (defined(invoker.base_dir)) {
+      args += [
+        "--base-dir",
+        rebase_path(invoker.base_dir, root_build_dir),
+      ]
+    }
+
+    if (defined(invoker.deps)) {
+      deps = invoker.deps
+    }
+    if (defined(invoker.public_deps)) {
+      public_deps = invoker.public_deps
+    }
+    if (defined(invoker.data_deps)) {
+      data_deps = invoker.data_deps
+    }
+
+    if (defined(invoker.visibility)) {
+      visibility = invoker.visibility
+    }
+  }
+}
+
+# Write the target's .build_config file. This is a json file that contains a
+# dictionary of information about how to build this target (things that
+# require knowledge about this target's dependencies and cannot be calculated
+# at gn-time). There is a special syntax to add a value in that dictionary to
+# an action/action_foreachs args:
+#   --python-arg=@FileArg($rebased_build_config_path:key0:key1)
+# At runtime, such an arg will be replaced by the value in the build_config.
+# See build/android/gyp/write_build_config.py and
+# build/android/gyp/util/build_utils.py:ExpandFileArgs
+template("write_build_config") {
+  set_sources_assignment_filter([])
+  if (defined(invoker.testonly)) {
+    testonly = invoker.testonly
+  }
+
+  assert(defined(invoker.type))
+  assert(defined(invoker.build_config))
+
+  type = invoker.type
+  build_config = invoker.build_config
+
+  assert(type == "android_apk" || type == "java_library" ||
+         type == "android_resources" || type == "deps_dex")
+
+  action(target_name) {
+    if (defined(invoker.visibility)) {
+      visibility = invoker.visibility
+    }
+
+    script = "//build/android/gyp/write_build_config.py"
+    depfile = "$target_gen_dir/$target_name.d"
+    inputs = []
+
+    deps = []
+    if (defined(invoker.deps)) {
+      deps += invoker.deps
+    }
+
+    possible_deps_configs = []
+    foreach(d, deps) {
+      dep_gen_dir = get_label_info(d, "target_gen_dir")
+      dep_name = get_label_info(d, "name")
+      possible_deps_configs += [ "$dep_gen_dir/$dep_name.build_config" ]
+    }
+    rebase_possible_deps_configs =
+        rebase_path(possible_deps_configs, root_build_dir)
+
+    outputs = [
+      depfile,
+      build_config,
+    ]
+
+    args = [
+      "--type",
+      type,
+      "--depfile",
+      rebase_path(depfile, root_build_dir),
+      "--possible-deps-configs=$rebase_possible_deps_configs",
+      "--build-config",
+      rebase_path(build_config, root_build_dir),
+    ]
+
+    is_java_library = type == "java_library"
+    is_apk = type == "android_apk"
+    is_android_resources = type == "android_resources"
+    is_deps_dex = type == "deps_dex"
+
+    supports_android = is_apk || is_android_resources || is_deps_dex ||
+                       (is_java_library && defined(invoker.supports_android) &&
+                        invoker.supports_android)
+    requires_android = is_apk || is_android_resources || is_deps_dex ||
+                       (is_java_library && defined(invoker.requires_android) &&
+                        invoker.requires_android)
+
+    assert(!requires_android || supports_android,
+           "requires_android requires" + " supports_android")
+
+    # Mark these variables as used.
+    assert(is_java_library || true)
+    assert(is_apk || true)
+    assert(is_android_resources || true)
+    assert(is_deps_dex || true)
+
+    if (is_java_library || is_apk) {
+      args += [
+        "--jar-path",
+        rebase_path(invoker.jar_path, root_build_dir),
+      ]
+    }
+
+    if (is_apk || is_deps_dex || (is_java_library && supports_android)) {
+      args += [
+        "--dex-path",
+        rebase_path(invoker.dex_path, root_build_dir),
+      ]
+    }
+    if (supports_android) {
+      args += [ "--supports-android" ]
+    }
+    if (requires_android) {
+      args += [ "--requires-android" ]
+    }
+    if (defined(invoker.bypass_platform_checks) &&
+        invoker.bypass_platform_checks) {
+      args += [ "--bypass-platform-checks" ]
+    }
+
+    if (defined(invoker.apk_under_test)) {
+      deps += [ invoker.apk_under_test ]
+      apk_under_test_gen_dir =
+          get_label_info(invoker.apk_under_test, "target_gen_dir")
+      apk_under_test_name = get_label_info(invoker.apk_under_test, "name")
+      apk_under_test_config =
+          "$apk_under_test_gen_dir/$apk_under_test_name.build_config"
+      args += [
+        "--tested-apk-config",
+        rebase_path(apk_under_test_config, root_build_dir),
+      ]
+    }
+
+    if (is_android_resources || is_apk) {
+      assert(defined(invoker.resources_zip))
+      args += [
+        "--resources-zip",
+        rebase_path(invoker.resources_zip, root_build_dir),
+      ]
+      if (defined(invoker.android_manifest)) {
+        inputs += [ invoker.android_manifest ]
+        args += [
+          "--android-manifest",
+          rebase_path(invoker.android_manifest, root_build_dir),
+        ]
+      } else {
+        assert(!is_apk, "apk build configs require an android_manifest")
+      }
+      if (defined(invoker.custom_package)) {
+        args += [
+          "--package-name",
+          invoker.custom_package,
+        ]
+      }
+      if (defined(invoker.r_text)) {
+        args += [
+          "--r-text",
+          rebase_path(invoker.r_text, root_build_dir),
+        ]
+      }
+    }
+
+    if (is_apk) {
+      if (defined(invoker.native_libs)) {
+        inputs += invoker.native_libs
+        rebased_native_libs = rebase_path(invoker.native_libs, root_build_dir)
+        rebased_android_readelf = rebase_path(android_readelf, root_build_dir)
+        args += [
+          "--native-libs=$rebased_native_libs",
+          "--readelf-path=$rebased_android_readelf",
+        ]
+      }
+    }
+
+    if (defined(invoker.srcjar)) {
+      args += [
+        "--srcjar",
+        rebase_path(invoker.srcjar, root_build_dir),
+      ]
+    }
+  }
+}
+
+template("process_java_prebuilt") {
+  set_sources_assignment_filter([])
+  if (defined(invoker.testonly)) {
+    testonly = invoker.testonly
+  }
+
+  _input_jar_path = invoker.input_jar_path
+  _output_jar_path = invoker.output_jar_path
+  _jar_toc_path = _output_jar_path + ".TOC"
+
+  assert(invoker.build_config != "")
+
+  if (defined(invoker.proguard_preprocess) && invoker.proguard_preprocess) {
+    _proguard_jar_path = "$android_sdk_root/tools/proguard/lib/proguard.jar"
+    _proguard_config_path = invoker.proguard_config
+    _build_config = invoker.build_config
+    _rebased_build_config = rebase_path(_build_config, root_build_dir)
+    _output_jar_target = "${target_name}__proguard_process"
+    action(_output_jar_target) {
+      script = "//build/android/gyp/proguard.py"
+      inputs = [
+        android_sdk_jar,
+        _proguard_jar_path,
+        _build_config,
+        _input_jar_path,
+        _proguard_config_path,
+      ]
+      depfile = "${target_gen_dir}/${target_name}.d"
+      outputs = [
+        depfile,
+        _output_jar_path,
+      ]
+      args = [
+        "--depfile",
+        rebase_path(depfile, root_build_dir),
+        "--proguard-path",
+        rebase_path(_proguard_jar_path, root_build_dir),
+        "--input-path",
+        rebase_path(_input_jar_path, root_build_dir),
+        "--output-path",
+        rebase_path(_output_jar_path, root_build_dir),
+        "--proguard-config",
+        rebase_path(_proguard_config_path, root_build_dir),
+        "--classpath",
+        rebased_android_sdk_jar,
+        "--classpath=@FileArg($_rebased_build_config:javac:classpath)",
+      ]
+
+      if (defined(invoker.deps)) {
+        deps = invoker.deps
+      }
+      if (defined(invoker.public_deps)) {
+        public_deps = invoker.public_deps
+      }
+      if (defined(invoker.data_deps)) {
+        data_deps = invoker.data_deps
+      }
+    }
+  } else {
+    _output_jar_target = "${target_name}__copy_jar"
+    copy(_output_jar_target) {
+      sources = [
+        _input_jar_path,
+      ]
+      outputs = [
+        _output_jar_path,
+      ]
+
+      if (defined(invoker.deps)) {
+        deps = invoker.deps
+      }
+      if (defined(invoker.public_deps)) {
+        public_deps = invoker.public_deps
+      }
+      if (defined(invoker.data_deps)) {
+        data_deps = invoker.data_deps
+      }
+    }
+  }
+
+  action("${target_name}__jar_toc") {
+    script = "//build/android/gyp/jar_toc.py"
+    depfile = "$target_gen_dir/$target_name.d"
+    outputs = [
+      depfile,
+      _jar_toc_path,
+      _jar_toc_path + ".md5.stamp",
+    ]
+    inputs = [
+      _output_jar_path,
+    ]
+    args = [
+      "--depfile",
+      rebase_path(depfile, root_build_dir),
+      "--jar-path",
+      rebase_path(_output_jar_path, root_build_dir),
+      "--toc-path",
+      rebase_path(_jar_toc_path, root_build_dir),
+    ]
+    public_deps = [
+      ":$_output_jar_target",
+    ]
+  }
+
+  group(target_name) {
+    if (defined(invoker.visibility)) {
+      visibility = invoker.visibility
+    }
+    public_deps = [
+      ":${target_name}__jar_toc",
+      ":$_output_jar_target",
+    ]
+  }
+}
+
+template("finalize_apk") {
+  action(target_name) {
+    script = "//build/android/gyp/finalize_apk.py"
+    depfile = "$target_gen_dir/$target_name.d"
+
+    if (defined(invoker.testonly)) {
+      testonly = invoker.testonly
+    }
+
+    sources = [
+      invoker.input_apk_path,
+    ]
+    inputs = [
+      invoker.keystore_path,
+    ]
+    outputs = [
+      depfile,
+      invoker.output_apk_path,
+    ]
+
+    args = [
+      "--depfile",
+      rebase_path(depfile, root_build_dir),
+      "--zipalign-path",
+      rebase_path(zipalign_path, root_build_dir),
+      "--unsigned-apk-path",
+      rebase_path(invoker.input_apk_path, root_build_dir),
+      "--final-apk-path",
+      rebase_path(invoker.output_apk_path, root_build_dir),
+      "--key-path",
+      rebase_path(invoker.keystore_path, root_build_dir),
+      "--key-name",
+      invoker.keystore_name,
+      "--key-passwd",
+      invoker.keystore_password,
+    ]
+    if (defined(invoker.rezip_apk) && invoker.rezip_apk) {
+      _rezip_jar_path = "$root_build_dir/lib.java/rezip_apk.jar"
+      inputs += [ _rezip_jar_path ]
+      args += [
+        "--load-library-from-zip=1",
+        "--rezip-apk-jar-path",
+        rebase_path(_rezip_jar_path, root_build_dir),
+      ]
+    }
+
+    if (defined(invoker.deps)) {
+      deps = invoker.deps
+    }
+    if (defined(invoker.public_deps)) {
+      public_deps = invoker.public_deps
+    }
+    if (defined(invoker.data_deps)) {
+      data_deps = invoker.data_deps
+    }
+  }
+}
+
+# Packages resources, assets, dex, and native libraries into an apk. Signs and
+# zipaligns the apk.
+template("create_apk") {
+  set_sources_assignment_filter([])
+  if (defined(invoker.testonly)) {
+    testonly = invoker.testonly
+  }
+
+  _android_manifest = invoker.android_manifest
+  _base_path = invoker.base_path
+  _final_apk_path = invoker.apk_path
+
+  if (defined(invoker.resources_zip)) {
+    _resources_zip = invoker.resources_zip
+  }
+  if (defined(invoker.dex_path)) {
+    _dex_path = invoker.dex_path
+  }
+  _load_library_from_apk = invoker.load_library_from_apk
+
+  _package_deps = []
+  if (defined(invoker.deps)) {
+    _package_deps = invoker.deps
+  }
+
+  _native_libs_dir = "//build/android/empty/res"
+  if (defined(invoker.native_libs_dir)) {
+    _native_libs_dir = invoker.native_libs_dir
+  }
+
+  if (defined(invoker.asset_location)) {
+    _asset_location = invoker.asset_location
+  }
+
+  _version_code = invoker.version_code
+  _version_name = invoker.version_name
+
+  _base_apk_path = _base_path + ".apk_intermediates"
+
+  _resource_packaged_apk_path = _base_apk_path + ".ap_"
+  _packaged_apk_path = _base_apk_path + ".unfinished.apk"
+  _shared_resources =
+      defined(invoker.shared_resources) && invoker.shared_resources
+
+  _configuration_name = "Release"
+  if (is_debug) {
+    _configuration_name = "Debug"
+  }
+
+  _keystore_path = invoker.keystore_path
+  _keystore_name = invoker.keystore_name
+  _keystore_password = invoker.keystore_password
+
+  _split_densities = []
+  if (defined(invoker.create_density_splits) && invoker.create_density_splits) {
+    _split_densities = [
+      "hdpi",
+      "xhdpi",
+      "xxhdpi",
+      "xxxhdpi",
+      "tvdpi",
+    ]
+  }
+
+  _split_languages = []
+  if (defined(invoker.language_splits)) {
+    _split_languages = invoker.language_splits
+  }
+
+  _package_resources_target_name = "${target_name}__package_resources"
+  action(_package_resources_target_name) {
+    deps = _package_deps
+
+    script = "//build/android/gyp/package_resources.py"
+    depfile = "${target_gen_dir}/${target_name}.d"
+    inputs = [
+      _android_manifest,
+    ]
+    if (defined(_resources_zip)) {
+      inputs += [ _resources_zip ]
+    }
+    outputs = [
+      depfile,
+      _resource_packaged_apk_path,
+    ]
+
+    args = [
+      "--depfile",
+      rebase_path(depfile, root_build_dir),
+      "--android-sdk",
+      rebased_android_sdk,
+      "--aapt-path",
+      android_aapt_path,
+      "--configuration-name=$_configuration_name",
+      "--android-manifest",
+      rebase_path(_android_manifest, root_build_dir),
+      "--version-code",
+      _version_code,
+      "--version-name",
+      _version_name,
+      "--apk-path",
+      rebase_path(_resource_packaged_apk_path, root_build_dir),
+    ]
+
+    if (defined(_asset_location)) {
+      args += [
+        "--asset-dir",
+        rebase_path(_asset_location, root_build_dir),
+      ]
+    }
+    if (defined(_resources_zip)) {
+      args += [
+        "--resource-zips",
+        rebase_path(_resources_zip, root_build_dir),
+      ]
+    }
+    if (_shared_resources) {
+      args += [ "--shared-resources" ]
+    }
+    if (_split_densities != []) {
+      args += [ "--create-density-splits" ]
+      foreach(_density, _split_densities) {
+        outputs += [ "${_resource_packaged_apk_path}_${_density}" ]
+      }
+    }
+    if (_split_languages != []) {
+      args += [ "--language-splits=$_split_languages" ]
+      foreach(_language, _split_languages) {
+        outputs += [ "${_resource_packaged_apk_path}_${_language}" ]
+      }
+    }
+    if (defined(invoker.extensions_to_not_compress)) {
+      args += [
+        "--no-compress",
+        invoker.extensions_to_not_compress,
+      ]
+    }
+  }
+
+  package_target = "${target_name}__package"
+  action(package_target) {
+    script = "//build/android/gyp/ant.py"
+    _ant_script = "//build/android/ant/apk-package.xml"
+
+    deps = [
+      ":${_package_resources_target_name}",
+    ]
+    if (defined(invoker.deps)) {
+      deps += invoker.deps
+    }
+    depfile = "$target_gen_dir/$target_name.d"
+
+    inputs = [
+      _resource_packaged_apk_path,
+      _ant_script,
+    ]
+    if (defined(_dex_path)) {
+      inputs += [ _dex_path ]
+    }
+
+    outputs = [
+      depfile,
+      _packaged_apk_path,
+    ]
+
+    _rebased_emma_jar = ""
+    _rebased_resource_packaged_apk_path =
+        rebase_path(_resource_packaged_apk_path, root_build_dir)
+    _rebased_packaged_apk_path = rebase_path(_packaged_apk_path, root_build_dir)
+    _rebased_native_libs_dir = rebase_path(_native_libs_dir, root_build_dir)
+    args = [
+      "--depfile",
+      rebase_path(depfile, root_build_dir),
+      "--",
+      "-quiet",
+      "-DANDROID_SDK_ROOT=$rebased_android_sdk_root",
+      "-DANDROID_SDK_TOOLS=$rebased_android_sdk_build_tools",
+      "-DRESOURCE_PACKAGED_APK_NAME=$_rebased_resource_packaged_apk_path",
+      "-DCONFIGURATION_NAME=$_configuration_name",
+      "-DNATIVE_LIBS_DIR=$_rebased_native_libs_dir",
+      "-DOUT_DIR=",
+      "-DUNSIGNED_APK_PATH=$_rebased_packaged_apk_path",
+      "-DEMMA_INSTRUMENT=0",
+      "-DEMMA_DEVICE_JAR=$_rebased_emma_jar",
+      "-Dbasedir=.",
+      "-buildfile",
+      rebase_path(_ant_script, root_build_dir),
+    ]
+    if (defined(_dex_path)) {
+      _rebased_dex_path = rebase_path(_dex_path, root_build_dir)
+      args += [
+        "-DDEX_FILE_PATH=$_rebased_dex_path",
+        "-DHAS_CODE=true",
+      ]
+    } else {
+      args += [ "-DHAS_CODE=false" ]
+    }
+  }
+
+  _finalize_apk_rule_name = "${target_name}__finalize"
+  finalize_apk(_finalize_apk_rule_name) {
+    input_apk_path = _packaged_apk_path
+    output_apk_path = _final_apk_path
+    keystore_path = _keystore_path
+    keystore_name = _keystore_name
+    keystore_password = _keystore_password
+    rezip_apk = _load_library_from_apk
+
+    public_deps = [
+      # Generator of the _packaged_apk_path this target takes as input.
+      ":$package_target",
+    ]
+  }
+
+  _final_deps = [ ":${_finalize_apk_rule_name}" ]
+
+  template("finalize_split") {
+    finalize_apk(target_name) {
+      _config = invoker.split_config
+      _type = invoker.split_type
+      input_apk_path = "${_resource_packaged_apk_path}_${_config}"
+      _output_paths = process_file_template(
+              [ _final_apk_path ],
+              "{{source_dir}}/{{source_name_part}}-${_type}-${_config}.apk")
+      output_apk_path = _output_paths[0]
+      keystore_path = _keystore_path
+      keystore_name = _keystore_name
+      keystore_password = _keystore_password
+      deps = [
+        ":${_package_resources_target_name}",
+      ]
+    }
+  }
+
+  foreach(_split, _split_densities) {
+    _split_rule = "${target_name}__finalize_${_split}_split"
+    finalize_split(_split_rule) {
+      split_type = "density"
+      split_config = _split
+    }
+    _final_deps += [ ":$_split_rule" ]
+  }
+  foreach(_split, _split_languages) {
+    _split_rule = "${target_name}__finalize_${_split}_split"
+    finalize_split(_split_rule) {
+      split_type = "lang"
+      split_config = _split
+    }
+    _final_deps += [ ":$_split_rule" ]
+  }
+
+  group(target_name) {
+    public_deps = _final_deps
+  }
+}
+
+template("java_prebuilt_impl") {
+  set_sources_assignment_filter([])
+  if (defined(invoker.testonly)) {
+    testonly = invoker.testonly
+  }
+  _supports_android =
+      defined(invoker.supports_android) && invoker.supports_android
+
+  assert(defined(invoker.jar_path))
+  _base_path = "${target_gen_dir}/$target_name"
+  _jar_path = _base_path + ".jar"
+  _build_config = _base_path + ".build_config"
+
+  if (_supports_android) {
+    _dex_path = _base_path + ".dex.jar"
+  }
+  _deps = []
+  if (defined(invoker.deps)) {
+    _deps = invoker.deps
+  }
+  _jar_deps = []
+  if (defined(invoker.jar_dep)) {
+    _jar_deps = [ invoker.jar_dep ]
+  }
+
+  _template_name = target_name
+
+  build_config_target_name = "${_template_name}__build_config"
+  process_jar_target_name = "${_template_name}__process_jar"
+  if (_supports_android) {
+    dex_target_name = "${_template_name}__dex"
+  }
+
+  write_build_config(build_config_target_name) {
+    type = "java_library"
+    supports_android = _supports_android
+    requires_android =
+        defined(invoker.requires_android) && invoker.requires_android
+
+    deps = _deps
+    build_config = _build_config
+    jar_path = _jar_path
+    if (_supports_android) {
+      dex_path = _dex_path
+    }
+  }
+
+  process_java_prebuilt(process_jar_target_name) {
+    visibility = [ ":$_template_name" ]
+    if (_supports_android) {
+      visibility += [ ":$dex_target_name" ]
+    }
+
+    if (defined(invoker.proguard_preprocess) && invoker.proguard_preprocess) {
+      proguard_preprocess = true
+      proguard_config = invoker.proguard_config
+    }
+
+    build_config = _build_config
+    input_jar_path = invoker.jar_path
+    output_jar_path = _jar_path
+
+    deps = [ ":$build_config_target_name" ] + _deps + _jar_deps
+  }
+
+  if (_supports_android) {
+    dex(dex_target_name) {
+      sources = [
+        _jar_path,
+      ]
+      output = _dex_path
+      deps = [ ":$process_jar_target_name" ] + _deps + _jar_deps
+    }
+  }
+
+  group(target_name) {
+    deps = [
+      ":$process_jar_target_name",
+    ]
+    if (defined(invoker.data_deps)) {
+      data_deps = invoker.data_deps
+    }
+    if (_supports_android) {
+      deps += [ ":$dex_target_name" ]
+    }
+  }
+}
+
+# Compiles and jars a set of java files.
+#
+# Outputs:
+#  $jar_path.jar
+#  $jar_path.jar.TOC
+#
+# Variables
+#   java_files: List of .java files to compile.
+#   java_deps: List of java dependencies. These should all have a .jar output
+#     at "${target_gen_dir}/${target_name}.jar.
+#   chromium_code: If true, enable extra warnings.
+#   srcjar_deps: List of srcjar dependencies. The .java files contained in the
+#     dependencies srcjar outputs will be compiled and added to the output jar.
+#   jar_path: Use this to explicitly set the output jar path. Defaults to
+#     "${target_gen_dir}/${target_name}.jar.
+template("compile_java") {
+  set_sources_assignment_filter([])
+  if (defined(invoker.testonly)) {
+    testonly = invoker.testonly
+  }
+
+  assert(defined(invoker.java_files))
+  assert(defined(invoker.build_config))
+  assert(defined(invoker.jar_path))
+
+  _java_files = invoker.java_files
+  _final_jar_path = invoker.jar_path
+  _intermediate_jar_path = "$target_gen_dir/$target_name.initial.jar"
+
+  _build_config = invoker.build_config
+
+  _jar_excluded_patterns = []
+  if (defined(invoker.jar_excluded_patterns)) {
+    _jar_excluded_patterns += invoker.jar_excluded_patterns
+  }
+
+  _chromium_code = false
+  if (defined(invoker.chromium_code)) {
+    _chromium_code = invoker.chromium_code
+  }
+
+  _supports_android = true
+  if (defined(invoker.supports_android)) {
+    _supports_android = invoker.supports_android
+  }
+
+  _enable_errorprone = use_errorprone_java_compiler
+  if (defined(invoker.enable_errorprone)) {
+    _enable_errorprone = invoker.enable_errorprone
+  }
+
+  _manifest_entries = []
+  if (defined(invoker.manifest_entries)) {
+    _manifest_entries = invoker.manifest_entries
+  }
+
+  _srcjar_deps = []
+  if (defined(invoker.srcjar_deps)) {
+    _srcjar_deps += invoker.srcjar_deps
+  }
+
+  _java_srcjars = []
+  if (defined(invoker.srcjars)) {
+    _java_srcjars = invoker.srcjars
+  }
+  foreach(dep, _srcjar_deps) {
+    _dep_gen_dir = get_label_info(dep, "target_gen_dir")
+    _dep_name = get_label_info(dep, "name")
+    _java_srcjars += [ "$_dep_gen_dir/$_dep_name.srcjar" ]
+  }
+
+  # Mark srcjar_deps as used.
+  assert(_srcjar_deps == [] || true)
+
+  _system_jars = []
+  if (defined(invoker.android) && invoker.android) {
+    _system_jars += [ android_sdk_jar ]
+  }
+
+  _rebased_build_config = rebase_path(_build_config, root_build_dir)
+  _rebased_jar_path = rebase_path(_intermediate_jar_path, root_build_dir)
+
+  javac_target_name = "${target_name}__javac"
+  finish_target_name = "${target_name}__finish"
+  final_target_name = target_name
+
+  action(javac_target_name) {
+    script = "//build/android/gyp/javac.py"
+    depfile = "$target_gen_dir/$target_name.d"
+    deps = _srcjar_deps
+    if (defined(invoker.deps)) {
+      deps += invoker.deps
+    }
+
+    outputs = [
+      depfile,
+      _intermediate_jar_path,
+      _intermediate_jar_path + ".md5.stamp",
+    ]
+    sources = _java_files + _java_srcjars
+    inputs = _system_jars + [ _build_config ]
+
+    _rebased_system_jars = rebase_path(_system_jars, root_build_dir)
+    _rebased_java_srcjars = rebase_path(_java_srcjars, root_build_dir)
+    _rebased_depfile = rebase_path(depfile, root_build_dir)
+    args = [
+      "--depfile=$_rebased_depfile",
+      "--classpath=$_rebased_system_jars",
+      "--classpath=@FileArg($_rebased_build_config:javac:classpath)",
+      "--jar-path=$_rebased_jar_path",
+      "--java-srcjars=$_rebased_java_srcjars",
+      "--java-srcjars=@FileArg($_rebased_build_config:javac:srcjars)",
+      "--jar-excluded-classes=$_jar_excluded_patterns",
+    ]
+    if (_supports_android) {
+      _rebased_android_sdk_jar = rebase_path(android_sdk_jar, root_build_dir)
+      args += [ "--bootclasspath=$_rebased_android_sdk_jar" ]
+    }
+    foreach(e, _manifest_entries) {
+      args += [ "--manifest-entry=" + e ]
+    }
+    if (_chromium_code) {
+      args += [ "--chromium-code=1" ]
+    }
+    if (_enable_errorprone) {
+      deps += [ "//third_party/errorprone:chromium_errorprone" ]
+      args += [
+        "--use-errorprone-path",
+        "bin/chromium_errorprone",
+      ]
+    }
+    args += rebase_path(_java_files, root_build_dir)
+  }
+
+  process_java_prebuilt(finish_target_name) {
+    visibility = [ ":$final_target_name" ]
+
+    build_config = _build_config
+    input_jar_path = _intermediate_jar_path
+    output_jar_path = _final_jar_path
+    if (defined(invoker.proguard_preprocess) && invoker.proguard_preprocess) {
+      proguard_preprocess = invoker.proguard_preprocess
+      proguard_config = invoker.proguard_config
+    }
+    deps = [
+      ":$javac_target_name",
+    ]
+  }
+
+  group(final_target_name) {
+    if (defined(invoker.visibility)) {
+      visibility = invoker.visibility
+    }
+    public_deps = [
+      ":$finish_target_name",
+    ]
+  }
+}
+
+template("java_library_impl") {
+  set_sources_assignment_filter([])
+  if (defined(invoker.testonly)) {
+    testonly = invoker.testonly
+  }
+
+  assert(
+      defined(invoker.java_files) || defined(invoker.DEPRECATED_java_in_dir) ||
+      defined(invoker.srcjars) || defined(invoker.srcjar_deps))
+  _base_path = "$target_gen_dir/$target_name"
+  _jar_path = _base_path + ".jar"
+  if (defined(invoker.jar_path)) {
+    _jar_path = invoker.jar_path
+  }
+  _template_name = target_name
+
+  _final_deps = []
+  _final_datadeps = []
+  if (defined(invoker.datadeps)) {
+    _final_datadeps = invoker.datadeps
+  }
+
+  _supports_android =
+      defined(invoker.supports_android) && invoker.supports_android
+  _requires_android =
+      defined(invoker.requires_android) && invoker.requires_android
+
+  if (_supports_android) {
+    _dex_path = _base_path + ".dex.jar"
+    if (defined(invoker.dex_path)) {
+      _dex_path = invoker.dex_path
+    }
+  }
+
+  # Define build_config_deps which will be a list of targets required to
+  # build the _build_config.
+  if (defined(invoker.override_build_config)) {
+    _build_config = invoker.override_build_config
+
+    # When a custom build config file is specified, we need to use the deps
+    # supplied by the invoker any time we reference the build config file.
+    assert(defined(invoker.deps),
+           "If you specify a build config file for " +
+               "java_library_impl($target_name), you should " +
+               "also specify the target that made it in the deps")
+    build_config_deps = invoker.deps
+  } else {
+    _build_config = _base_path + ".build_config"
+    build_config_target_name = "${_template_name}__build_config"
+    build_config_deps = [ ":$build_config_target_name" ]
+
+    write_build_config(build_config_target_name) {
+      type = "java_library"
+      supports_android = _supports_android
+      requires_android = _requires_android
+      bypass_platform_checks = defined(invoker.bypass_platform_checks) &&
+                               invoker.bypass_platform_checks
+
+      deps = []
+      if (defined(invoker.deps)) {
+        deps += invoker.deps
+      }
+
+      build_config = _build_config
+      jar_path = _jar_path
+      if (_supports_android) {
+        dex_path = _dex_path
+      }
+    }
+  }
+
+  _chromium_code = true
+  if (defined(invoker.chromium_code)) {
+    _chromium_code = invoker.chromium_code
+  }
+
+  _srcjar_deps = []
+  if (defined(invoker.srcjar_deps)) {
+    _srcjar_deps = invoker.srcjar_deps
+  }
+
+  _srcjars = []
+  if (defined(invoker.srcjars)) {
+    _srcjars = invoker.srcjars
+  }
+
+  _java_files = []
+  if (defined(invoker.java_files)) {
+    _java_files = invoker.java_files
+  } else if (defined(invoker.DEPRECATED_java_in_dir)) {
+    _src_dir = invoker.DEPRECATED_java_in_dir + "/src"
+    _src_dir_exists = exec_script("//build/dir_exists.py",
+                                  [ rebase_path(_src_dir, root_build_dir) ],
+                                  "string")
+    assert(_src_dir_exists == "False",
+           "In GN, java_in_dir should be the fully specified java directory " +
+               "(i.e. including the trailing \"/src\")")
+
+    _java_files_build_rel = exec_script(
+            "//build/android/gyp/find.py",
+            [
+              "--pattern",
+              "*.java",
+              rebase_path(invoker.DEPRECATED_java_in_dir, root_build_dir),
+            ],
+            "list lines")
+    _java_files = rebase_path(_java_files_build_rel, ".", root_build_dir)
+  }
+  assert(_java_files != [] || _srcjar_deps != [] || _srcjars != [])
+
+  _compile_java_target = "${_template_name}__compile_java"
+  _final_deps += [ ":$_compile_java_target" ]
+  compile_java(_compile_java_target) {
+    jar_path = _jar_path
+    build_config = _build_config
+    java_files = _java_files
+    srcjar_deps = _srcjar_deps
+    srcjars = _srcjars
+    chromium_code = _chromium_code
+    android = _requires_android
+
+    if (defined(invoker.enable_errorprone)) {
+      enable_errorprone = invoker.enable_errorprone
+    }
+    if (defined(invoker.jar_excluded_patterns)) {
+      jar_excluded_patterns = invoker.jar_excluded_patterns
+    }
+    if (defined(invoker.proguard_preprocess)) {
+      proguard_preprocess = invoker.proguard_preprocess
+    }
+    if (defined(invoker.proguard_config)) {
+      proguard_config = invoker.proguard_config
+    }
+    if (defined(invoker.dist_jar_path)) {
+      dist_jar_path = invoker.dist_jar_path
+    }
+    if (defined(invoker.manifest_entries)) {
+      manifest_entries = invoker.manifest_entries
+    }
+
+    supports_android = _supports_android
+    deps = build_config_deps
+  }
+
+  if (defined(invoker.main_class)) {
+    _final_deps += [ ":${_template_name}__binary_script" ]
+    action("${_template_name}__binary_script") {
+      script = "//build/android/gyp/create_java_binary_script.py"
+      depfile = "$target_gen_dir/$target_name.d"
+      java_script = "$root_build_dir/bin/$_template_name"
+      inputs = [
+        _build_config,
+      ]
+      outputs = [
+        depfile,
+        java_script,
+      ]
+      _rebased_build_config = rebase_path(_build_config, root_build_dir)
+      args = [
+        "--depfile",
+        rebase_path(depfile, root_build_dir),
+        "--output",
+        rebase_path(java_script, root_build_dir),
+        "--classpath=@FileArg($_rebased_build_config:java:full_classpath)",
+        "--jar-path",
+        rebase_path(_jar_path, root_build_dir),
+        "--main-class",
+        invoker.main_class,
+      ]
+
+      deps = build_config_deps
+    }
+  }
+
+  if (_supports_android) {
+    if (defined(invoker.chromium_code) && invoker.chromium_code) {
+      _android_manifest = "//build/android/AndroidManifest.xml"
+      if (defined(invoker.android_manifest)) {
+        _android_manifest = invoker.android_manifest
+      }
+
+      _final_datadeps += [ ":${_template_name}__lint" ]
+      android_lint("${_template_name}__lint") {
+        android_manifest = _android_manifest
+        jar_path = _jar_path
+        java_files = _java_files
+        deps = [
+          ":$_compile_java_target",
+        ]
+        if (defined(invoker.deps)) {
+          deps += invoker.deps
+        }
+      }
+
+      if (run_findbugs) {
+        _final_datadeps += [ ":${_template_name}__findbugs" ]
+        findbugs("${_template_name}__findbugs") {
+          build_config = _build_config
+          jar_path = _jar_path
+          deps = build_config_deps
+        }
+      }
+    }
+
+    _final_deps += [ ":${_template_name}__dex" ]
+    dex("${_template_name}__dex") {
+      sources = [
+        _jar_path,
+      ]
+      output = _dex_path
+      deps = [
+        ":$_compile_java_target",
+      ]
+    }
+  }
+
+  group(target_name) {
+    if (defined(invoker.visibility)) {
+      visibility = invoker.visibility
+    }
+    public_deps = _final_deps
+    data_deps = _final_datadeps
+  }
+}
+
+# Runs process_resources.py
+template("process_resources") {
+  set_sources_assignment_filter([])
+  if (defined(invoker.testonly)) {
+    testonly = invoker.testonly
+  }
+
+  zip_path = invoker.zip_path
+  srcjar_path = invoker.srcjar_path
+  r_text_path = invoker.r_text_path
+  build_config = invoker.build_config
+  resource_dirs = invoker.resource_dirs
+  android_manifest = invoker.android_manifest
+
+  non_constant_id = true
+  if (defined(invoker.generate_constant_ids) && invoker.generate_constant_ids) {
+    non_constant_id = false
+  }
+
+  action(target_name) {
+    if (defined(invoker.visibility)) {
+      visibility = invoker.visibility
+    }
+
+    script = "//build/android/gyp/process_resources.py"
+
+    depfile = "$target_gen_dir/$target_name.d"
+    outputs = [
+      depfile,
+      zip_path,
+      srcjar_path,
+      r_text_path,
+    ]
+
+    sources_build_rel = exec_script("//build/android/gyp/find.py",
+                                    rebase_path(resource_dirs, root_build_dir),
+                                    "list lines")
+    sources = rebase_path(sources_build_rel, ".", root_build_dir)
+
+    inputs = [
+      build_config,
+      android_manifest,
+    ]
+
+    rebase_resource_dirs = rebase_path(resource_dirs, root_build_dir)
+    rebase_build_config = rebase_path(build_config, root_build_dir)
+    args = [
+      "--depfile",
+      rebase_path(depfile, root_build_dir),
+      "--android-sdk",
+      rebase_path(android_sdk, root_build_dir),
+      "--aapt-path",
+      android_aapt_path,
+      "--android-manifest",
+      rebase_path(android_manifest, root_build_dir),
+      "--resource-dirs=$rebase_resource_dirs",
+      "--srcjar-out",
+      rebase_path(srcjar_path, root_build_dir),
+      "--resource-zip-out",
+      rebase_path(zip_path, root_build_dir),
+      "--r-text-out",
+      rebase_path(r_text_path, root_build_dir),
+      "--dependencies-res-zips=@FileArg($rebase_build_config:resources:dependency_zips)",
+      "--extra-res-packages=@FileArg($rebase_build_config:resources:extra_package_names)",
+      "--extra-r-text-files=@FileArg($rebase_build_config:resources:extra_r_text_files)",
+    ]
+
+    if (non_constant_id) {
+      args += [ "--non-constant-id" ]
+    }
+
+    if (defined(invoker.custom_package)) {
+      args += [
+        "--custom-package",
+        invoker.custom_package,
+      ]
+    }
+
+    if (defined(invoker.v14_skip) && invoker.v14_skip) {
+      args += [ "--v14-skip" ]
+    }
+
+    if (defined(invoker.shared_resources) && invoker.shared_resources) {
+      args += [ "--shared-resources" ]
+    }
+
+    if (defined(invoker.include_all_resources) &&
+        invoker.include_all_resources) {
+      args += [ "--include-all-resources" ]
+    }
+
+    if (defined(invoker.all_resources_zip_path)) {
+      all_resources_zip = invoker.all_resources_zip_path
+      outputs += [ all_resources_zip ]
+      args += [
+        "--all-resources-zip-out",
+        rebase_path(all_resources_zip, root_build_dir),
+      ]
+    }
+
+    if (defined(invoker.args)) {
+      args += invoker.args
+    }
+    if (defined(invoker.deps)) {
+      deps = invoker.deps
+    }
+  }
+}
+
+template("copy_ex") {
+  set_sources_assignment_filter([])
+  if (defined(invoker.testonly)) {
+    testonly = invoker.testonly
+  }
+
+  action(target_name) {
+    if (defined(invoker.visibility)) {
+      visibility = invoker.visibility
+    }
+
+    script = "//build/android/gyp/copy_ex.py"
+
+    if (defined(invoker.deps)) {
+      deps = invoker.deps
+    }
+
+    sources = []
+    if (defined(invoker.sources)) {
+      sources += invoker.sources
+    }
+
+    inputs = []
+    if (defined(invoker.inputs)) {
+      inputs += invoker.inputs
+    }
+
+    depfile = "$target_gen_dir/$target_name.d"
+    outputs = [
+      depfile,
+    ]
+
+    args = [
+      "--depfile",
+      rebase_path(depfile, root_build_dir),
+      "--dest",
+      rebase_path(invoker.dest, root_build_dir),
+    ]
+    rebased_sources = rebase_path(sources, root_build_dir)
+    args += [ "--files=$rebased_sources" ]
+
+    if (defined(invoker.clear_dir) && invoker.clear_dir) {
+      args += [ "--clear" ]
+    }
+
+    if (defined(invoker.args)) {
+      args += invoker.args
+    }
+  }
+}
+
+# Produces a single .dex.jar out of a set of Java dependencies.
+template("deps_dex") {
+  set_sources_assignment_filter([])
+  build_config = "$target_gen_dir/${target_name}.build_config"
+  build_config_target_name = "${target_name}__build_config"
+
+  write_build_config(build_config_target_name) {
+    type = "deps_dex"
+    deps = invoker.deps
+
+    build_config = build_config
+    dex_path = invoker.dex_path
+  }
+
+  rebased_build_config = rebase_path(build_config, root_build_dir)
+  dex(target_name) {
+    inputs = [
+      build_config,
+    ]
+    output = invoker.dex_path
+    dex_arg_key = "${rebased_build_config}:final_dex:dependency_dex_files"
+    args = [ "--inputs=@FileArg($dex_arg_key)" ]
+    if (defined(invoker.excluded_jars)) {
+      excluded_jars = rebase_path(invoker.excluded_jars, root_build_dir)
+      args += [ "--excluded-paths=${excluded_jars}" ]
+    }
+    deps = [
+      ":$build_config_target_name",
+    ]
+  }
+}
+
+# Creates an AndroidManifest.xml for an APK split.
+template("generate_split_manifest") {
+  assert(defined(invoker.main_manifest))
+  assert(defined(invoker.out_manifest))
+  assert(defined(invoker.split_name))
+
+  action(target_name) {
+    depfile = "$target_gen_dir/$target_name.d"
+    if (defined(invoker.deps)) {
+      deps = invoker.deps
+    }
+    args = [
+      "--main-manifest",
+      rebase_path(invoker.main_manifest, root_build_dir),
+      "--out-manifest",
+      rebase_path(invoker.out_manifest, root_build_dir),
+      "--split",
+      invoker.split_name,
+    ]
+    if (defined(invoker.version_code)) {
+      args += [
+        "--version-code",
+        invoker.version_code,
+      ]
+    }
+    if (defined(invoker.version_name)) {
+      args += [
+        "--version-name",
+        invoker.version_name,
+      ]
+    }
+    if (defined(invoker.has_code)) {
+      args += [
+        "--has-code",
+        invoker.has_code,
+      ]
+    }
+    args += [
+      "--depfile",
+      rebase_path(depfile, root_build_dir),
+    ]
+
+    script = "//build/android/gyp/generate_split_manifest.py"
+    outputs = [
+      depfile,
+      invoker.out_manifest,
+    ]
+    inputs = [
+      invoker.main_manifest,
+    ]
+  }
+}
+
+# Generates a script in the output bin directory which runs the test
+# target using the test runner script in build/android/test_runner.py.
+template("test_runner_script") {
+  testonly = true
+  _test_name = invoker.test_name
+  _test_type = invoker.test_type
+
+  action(target_name) {
+    script = "//build/android/gyp/create_test_runner_script.py"
+    depfile = "$target_gen_dir/$target_name.d"
+
+    test_runner_args = [
+      _test_type,
+      "--output-directory",
+      rebase_path(root_build_dir, root_build_dir),
+    ]
+    if (_test_type == "gtest") {
+      assert(defined(invoker.test_suite))
+      test_runner_args += [
+        "--suite",
+        invoker.test_suite,
+      ]
+    } else if (_test_type == "instrumentation") {
+      assert(defined(invoker.test_apk))
+      test_runner_args += [
+        "--test-apk",
+        invoker.test_apk,
+      ]
+      if (defined(invoker.support_apk_path)) {
+        test_runner_args += [
+          "--support-apk",
+          rebase_path(invoker.support_apk_path, root_build_dir),
+        ]
+      }
+    } else {
+      assert(false, "Invalid test type: $_test_type.")
+    }
+
+    if (defined(invoker.isolate_file)) {
+      test_runner_args += [
+        "--isolate-file-path",
+        rebase_path(invoker.isolate_file, root_build_dir),
+      ]
+    }
+
+    generated_script = "$root_build_dir/bin/run_${_test_name}"
+    outputs = [
+      depfile,
+      generated_script,
+    ]
+    args = [
+      "--depfile",
+      rebase_path(depfile, root_build_dir),
+      "--script-output-path",
+      rebase_path(generated_script, root_build_dir),
+    ]
+    args += test_runner_args
+  }
+}