Move mojo and mojom from mojo/public/dart to mojo/dart/packages

mojo/public/dart/mojom/lib/src/commands/single.dart

-// Copyright 2015 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.
-
-library mojom.command.single;
-
-import 'dart:async';
-import 'dart:io';
-
-import 'package:args/args.dart';
-import 'package:args/command_runner.dart';
-import 'package:mojom/src/commands/mojom_command.dart';
-import 'package:mojom/src/generate.dart';
-import 'package:mojom/src/utils.dart';
-import 'package:path/path.dart' as path;
-
-class SinglePackageCommand extends MojomCommand {
-  String get name => 'single';
-  String get description => 'Generate bindings for a package.';
-  String get invocation => 'mojom.dart single';
-
-  Directory _package;
-
-  SinglePackageCommand() {
-    argParser.addOption('package',
-        abbr: 'p',
-        defaultsTo: Directory.current.path,
-        help: 'Path to a Dart package.');
-  }
-
-  run() async {
-    MojomCommand.setupLogging();
-    await _validateArguments();
-
-    var mojomFinder = new MojomFinder(mojomRoot, _package.parent, skips);
-    List<PackageInfo> packageInfos = await mojomFinder.find();
-
-    var generator = new MojomGenerator(mojoSdk,
-        dryRun: dryRun, errorOnDuplicate: errorOnDuplicate);
-    for (PackageInfo info in packageInfos) {
-      await generator.generate(info);
-    }
-  }
-
-  _validateArguments() async {
-    await validateArguments();
-
-    _package = new Directory(makeAbsolute(argResults['package']));
-    log.info("package = $_package");
-    if (!(await _package.exists())) {
-      throw new CommandLineError("The package $_package must exist");
-    }
-  }
-}