Migrate desktop_photo_search to top level (#1002)

desktop_photo_search/fluent_ui/tool/grind.dart

@@ -0,0 +1,72 @@
+// Copyright 2019 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'dart:async';
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:async/async.dart' show StreamGroup;
+import 'package:grinder/grinder.dart';
+
+void main(List<String> args) => grind(args);
+
+@DefaultTask()
+@Depends(pubGet, generateJsonBindings, analyzeSource, test)
+void build() {}
+
+@Task()
+Future<void> pubGet() async => _logProcessOutput(
+      Process.start(
+        'flutter',
+        ['pub', 'get'],
+      ),
+    );
+
+@Task()
+Future<void> generateJsonBindings() async => _logProcessOutput(
+      Process.start(
+        'flutter',
+        ['pub', 'run', 'build_runner', 'build', '--delete-conflicting-outputs'],
+      ),
+    );
+
+@Task()
+Future<void> watch() async => _logProcessOutput(
+      Process.start(
+        'flutter',
+        ['pub', 'run', 'build_runner', 'watch'],
+      ),
+    );
+
+@Task()
+Future<void> analyzeSource() async => _logProcessOutput(
+      Process.start(
+        'flutter',
+        ['analyze'],
+      ),
+    );
+
+@Task()
+Future<void> test() async => _logProcessOutput(
+      Process.start(
+        'flutter',
+        ['test'],
+      ),
+    );
+
+@Task()
+Future<void> clean() => _logProcessOutput(
+      Process.start(
+        'flutter',
+        ['clean'],
+      ),
+    );
+
+Future<void> _logProcessOutput(Future<Process> proc) async {
+  final process = await proc;
+  final output = StreamGroup.merge([process.stdout, process.stderr]);
+  await for (final message in output) {
+    log(utf8.decode(message));
+  }
+}