Store the async-await compiled pub code directly in the repo.

sdk/lib/_internal/pub_generated/test/barback/all_includes_all_default_directories_test.dart

+import 'package:scheduled_test/scheduled_test.dart';
+import '../descriptor.dart' as d;
+import '../serve/utils.dart';
+import '../test_pub.dart';
+main() {
+  initConfig();
+  setUp(() {
+    d.dir(
+        appPath,
+        [
+            d.appPubspec(),
+            d.dir('benchmark', [d.file('file.txt', 'benchmark')]),
+            d.dir('bin', [d.file('file.txt', 'bin')]),
+            d.dir('example', [d.file('file.txt', 'example')]),
+            d.dir('test', [d.file('file.txt', 'test')]),
+            d.dir('web', [d.file('file.txt', 'web')]),
+            d.dir('unknown', [d.file('file.txt', 'unknown')])]).create();
+  });
+  integration("build --all finds assets in default source directories", () {
+    schedulePub(
+        args: ["build", "--all"],
+        output: new RegExp(r'Built 5 files to "build".'));
+    d.dir(
+        appPath,
+        [
+            d.dir(
+                'build',
+                [
+                    d.dir('benchmark', [d.file('file.txt', 'benchmark')]),
+                    d.dir('bin', [d.file('file.txt', 'bin')]),
+                    d.dir('example', [d.file('file.txt', 'example')]),
+                    d.dir('test', [d.file('file.txt', 'test')]),
+                    d.dir('web', [d.file('file.txt', 'web')]),
+                    d.nothing('unknown')])]).validate();
+  });
+  integration("serve --all finds assets in default source directories", () {
+    pubServe(args: ["--all"]);
+    requestShouldSucceed("file.txt", "benchmark", root: "benchmark");
+    requestShouldSucceed("file.txt", "bin", root: "bin");
+    requestShouldSucceed("file.txt", "example", root: "example");
+    requestShouldSucceed("file.txt", "test", root: "test");
+    requestShouldSucceed("file.txt", "web", root: "web");
+    expectNotServed("unknown");
+    endPubServe();
+  });
+}