Remove flutter_kernel_sdk dart script (flutter/engine#10808)

engine/src/flutter/ci/licenses_golden/licenses_flutter

@@ -1015,7 +1015,6 @@ FILE: ../../../flutter/vulkan/vulkan_utilities.cc
 FILE: ../../../flutter/vulkan/vulkan_utilities.h
 FILE: ../../../flutter/vulkan/vulkan_window.cc
 FILE: ../../../flutter/vulkan/vulkan_window.h
-FILE: ../../../flutter/web_sdk/flutter_kernel_sdk.dart
 FILE: ../../../flutter/web_sdk/libraries.json
 FILE: ../../../flutter/web_sdk/sdk_rewriter.dart
 ----------------------------------------------------------------------------------------------------

engine/src/flutter/web_sdk/BUILD.gn

@@ -5,8 +5,8 @@
 import("//third_party/dart/build/dart/dart_action.gni")
 import("//third_party/dart/utils/compile_platform.gni")
 
-sdk_dill = "$root_out_dir/flutter_web_sdk/kernel/flutter_ddc_sdk.dill"
 sdk_libraries_json = "$root_out_dir/flutter_web_sdk/libraries.json"
+sdk_dill = "$root_out_dir/flutter_web_sdk/kernel/flutter_ddc_sdk.dill"
 
 web_ui_sources =
     exec_script("//third_party/dart/tools/list_dart_files.py",
@@ -31,6 +31,7 @@ web_engine_sources += [ "$flutter_root/lib/web_ui/lib/src/engine.dart" ]
 group("web_sdk") {
   deps = [
     ":flutter_dartdevc_kernel_sdk",
+    ":flutter_dartdevc_kernel_sdk_outline",
     ":web_engine_sources",
     ":web_ui_library",
     ":web_ui_sources",
@@ -95,6 +96,48 @@ copy("web_ui_library") {
   ]
 }
 
+# Compile the DDC SDK's summary.
+prebuilt_dart_action("flutter_dartdevc_kernel_sdk_outline") {
+  deps = [
+    "//third_party/dart/pkg:pkg_files_stamp",
+    "//third_party/dart/utils/dartdevc:dartdevc_files_stamp",
+    "//third_party/dart/utils/dartdevc:dartdevc_sdk_patch_stamp",
+  ]
+
+  inputs = []
+
+  outputs = [
+    sdk_dill,
+  ]
+
+  script = "//third_party/dart/utils/bazel/kernel_worker.dart"
+
+  args = [
+    "--summary-only",
+    "--target",
+    "ddc",
+    "--packages-file",
+    "org-dartlang-sdk:/third_party/dart/.packages",
+    "--multi-root-scheme",
+    "org-dartlang-sdk",
+    "--multi-root",
+    "file://" + rebase_path("../../"),
+    "--libraries-file",
+    "org-dartlang-sdk:/$sdk_libraries_json",
+    "--output",
+    rebase_path(sdk_dill),
+    "--source",
+    "dart:core",
+
+    # Additional Flutter web dart libraries
+    "--source",
+    "dart:ui",
+    "--source",
+    "dart:_engine",
+  ]
+}
+
+# Compiles the DDC SDK's JS code.
 prebuilt_dart_action("flutter_dartdevc_kernel_sdk") {
   deps = [
     "//third_party/dart/pkg:pkg_files_stamp",
@@ -102,25 +145,39 @@ prebuilt_dart_action("flutter_dartdevc_kernel_sdk") {
     "//third_party/dart/utils/dartdevc:dartdevc_sdk_patch_stamp",
   ]
 
-  inputs = [
-    "//third_party/dart/pkg/dev_compiler/tool/kernel_sdk.dart",
-  ]
+  inputs = []
+
+  packages = "//third_party/dart/.packages"
+
+  script = "//third_party/dart/pkg/dev_compiler/bin/dartdevc.dart"
 
   outputs = [
-    sdk_dill,
-    "$root_out_dir/flutter_web_sdk/lib/_internal/libraries.json",
     "$root_out_dir/flutter_web_sdk/kernel/amd/dart_sdk.js",
     "$root_out_dir/flutter_web_sdk/kernel/amd/dart_sdk.js.map",
   ]
 
-  script = "flutter_kernel_sdk.dart"
-  packages = "//third_party/dart/.packages"
-
-  output_path = rebase_path(sdk_dill)
-  libraries_path = rebase_path(sdk_libraries_json)
-
   args = [
-    "--output=$output_path",
-    "--libraries=$libraries_path",
+    "-k",
+    "--compile-sdk",
+    "dart:core",
+
+    # Additional Flutter web dart libraries
+    "dart:ui",
+    "dart:_engine",
+    "--no-summarize",
+    "--packages",
+    "org-dartlang-sdk:/third_party/dart/.packages",
+    "--multi-root-scheme",
+    "org-dartlang-sdk",
+    "--multi-root",
+    "file://" + rebase_path("../../"),
+    "--multi-root-output-path",
+    rebase_path("$root_out_dir/"),
+    "--libraries-file",
+    "org-dartlang-sdk:/$sdk_libraries_json",
+    "--modules",
+    "amd",
+    "-o",
+    rebase_path("$root_out_dir/flutter_web_sdk/kernel/amd/dart_sdk.js"),
   ]
 }

engine/src/flutter/web_sdk/flutter_kernel_sdk.dart

@@ -1,133 +0,0 @@
-// Copyright 2013 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// These packages exist in the third_party/dart .package, but not locally
-// which confuses the analyzer.
-// ignore_for_file: uri_does_not_exist
-import 'dart:async';
-import 'dart:convert' show json;
-import 'dart:io';
-import 'package:args/args.dart' show ArgParser;
-import 'package:dev_compiler/src/compiler/module_builder.dart';
-import 'package:dev_compiler/src/compiler/shared_command.dart'
-    show SharedCompilerOptions;
-import 'package:dev_compiler/src/kernel/target.dart';
-import 'package:dev_compiler/src/kernel/command.dart';
-import 'package:dev_compiler/src/kernel/compiler.dart';
-import 'package:front_end/src/api_unstable/ddc.dart'
-    show
-        CompilerOptions,
-        kernelForComponent,
-        DiagnosticMessage,
-        printDiagnosticMessage,
-        Severity;
-import 'package:kernel/kernel.dart';
-import 'package:kernel/target/targets.dart';
-import 'package:path/path.dart' as path;
-
-// This script is forked from https://github.com/dart-lang/sdk/blob/master/pkg/dev_compiler/tool/kernel_sdk.dart
-// and produces the precompiled sdk for dartdevc. This has been modified to include a dart:ui target.
-Future main(List<String> args) async {
-  var ddcPath = path.dirname(path.dirname(path.fromUri(Platform.script)));
-
-  // Parse flags.
-  var parser = ArgParser()
-    ..addOption('output')
-    ..addOption('libraries',
-        defaultsTo: path.join(ddcPath, '../../sdk/lib/libraries.json'));
-  var parserOptions = parser.parse(args);
-  var outputPath = parserOptions['output'] as String;
-  if (outputPath == null) {
-    var sdkRoot = path.absolute(path.dirname(path.dirname(ddcPath)));
-    var buildDir = path.join(sdkRoot, Platform.isMacOS ? 'xcodebuild' : 'out');
-    var genDir = path.join(buildDir, 'ReleaseX64', 'gen', 'utils', 'dartdevc');
-    outputPath = path.join(genDir, 'kernel', 'ddc_sdk.dill');
-  }
-
-  var librarySpecPath = parserOptions['libraries'] as String;
-  var packagesPath = path.join(ddcPath, '../third_party/dart/.packages');
-  void onDiagnostic(DiagnosticMessage message) {
-    printDiagnosticMessage(message, print);
-    if (message.severity == Severity.error ||
-        message.severity == Severity.internalProblem) {
-      exitCode = 1;
-    }
-  }
-
-  var target = FlutterDevCompilerTarget();
-  var options = CompilerOptions()
-    ..compileSdk = true
-    // TODO(sigmund): remove this unnecessary option when possible.
-    ..sdkRoot = Uri.base
-    ..packagesFileUri = Uri.base.resolveUri(Uri.file(packagesPath))
-    ..librariesSpecificationUri = Uri.base.resolveUri(Uri.file(librarySpecPath))
-    ..target = target
-    ..onDiagnostic = onDiagnostic
-    ..environmentDefines = {};
-
-  var inputs = target.extraRequiredLibraries.map(Uri.parse).toList();
-  var component = await kernelForComponent(inputs, options);
-
-  var outputDir = path.dirname(outputPath);
-  await Directory(outputDir).create(recursive: true);
-  await writeComponentToBinary(component, outputPath);
-
-  var jsModule = ProgramCompiler(
-      component,
-      target.hierarchy,
-      SharedCompilerOptions(moduleName: 'dart_sdk'),
-      {}).emitModule(component, [], [], {});
-  var moduleFormats = {
-    'amd': ModuleFormat.amd,
-  };
-
-  for (var name in moduleFormats.keys) {
-    var format = moduleFormats[name];
-    var jsDir = path.join(outputDir, name);
-    var jsPath = path.join(jsDir, 'dart_sdk.js');
-    await Directory(jsDir).create();
-    var jsCode = jsProgramToCode(jsModule, format);
-    await File(jsPath).writeAsString(jsCode.code);
-    await File('$jsPath.map').writeAsString(json.encode(jsCode.sourceMap));
-  }
-}
-
-class FlutterDevCompilerTarget extends DevCompilerTarget {
-  FlutterDevCompilerTarget() : super(TargetFlags());
-
-  @override
-  List<String> get extraRequiredLibraries => const [
-        'dart:_runtime',
-        'dart:_debugger',
-        'dart:_foreign_helper',
-        'dart:_interceptors',
-        'dart:_internal',
-        'dart:_isolate_helper',
-        'dart:_js_helper',
-        'dart:_js_mirrors',
-        'dart:_js_primitives',
-        'dart:_metadata',
-        'dart:_native_typed_data',
-        'dart:async',
-        'dart:collection',
-        'dart:convert',
-        'dart:developer',
-        'dart:io',
-        'dart:isolate',
-        'dart:js',
-        'dart:js_util',
-        'dart:math',
-        'dart:mirrors',
-        'dart:typed_data',
-        'dart:indexed_db',
-        'dart:html',
-        'dart:html_common',
-        'dart:svg',
-        'dart:web_audio',
-        'dart:web_gl',
-        'dart:web_sql',
-        'dart:ui',
-        'dart:_engine',
-      ];
-}