Revert "Move `analyzer_cli` into the SDK."

pkg/analyzer_cli/lib/src/plugin/plugin_manager.dart

Index: pkg/analyzer_cli/lib/src/plugin/plugin_manager.dart
diff --git a/pkg/analyzer_cli/lib/src/plugin/plugin_manager.dart b/pkg/analyzer_cli/lib/src/plugin/plugin_manager.dart
deleted file mode 100644
index 13a820282af125a3086125529340321f779fe7e0..0000000000000000000000000000000000000000
--- a/pkg/analyzer_cli/lib/src/plugin/plugin_manager.dart
+++ /dev/null
@@ -1,110 +0,0 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-library analyzer_cli.src.plugin.plugin_manager;
-
-import 'dart:io';
-
-import 'package:analyzer/src/plugin/plugin_configuration.dart';
-import 'package:path/path.dart' as path;
-
-const _manifestFileName = 'plugins.yaml';
-
-/// Given a local configuration (as defined in `.analysis_options`)
-/// and information from a plugin manifest, return plugin info
-/// appropriate for configuring this plugin.
-PluginInfo combine(PluginInfo localConfig, PluginInfo manifestInfo) {
-  return new PluginInfo(
-      name: localConfig.name,
-      version: manifestInfo.version,
-      className: manifestInfo.className,
-      libraryUri: manifestInfo.libraryUri);
-}
-
-/// Call-back to allow for the injection of manifest readers that do not need
-/// to go to disk (for testing purposes).
-typedef String ManifestReader(Uri uri);
-
-/// Wraps a [plugin] info object elaborated with any configuration information
-/// extracted from an associated manifest and [status].
-class PluginDetails {
-  /// Plugin status.
-  final PluginStatus status;
-
-  /// Plugin info.
-  final PluginInfo plugin;
-
-  /// Wrap a [plugin] with [status] info.
-  PluginDetails(this.plugin) : status = PluginStatus.Applicable;
-  PluginDetails.notApplicable(this.plugin)
-      : status = PluginStatus.NotApplicable;
-  PluginDetails.notFound(this.plugin) : status = PluginStatus.NotFound;
-}
-
-/// Manages plugin information derived from plugin manifests.
-class PluginManager {
-  /// Mapping from package name to package location.
-  final Map<String, Uri> _packageMap;
-
-  /// The package naming the app to host plugins.
-  final String hostPackage;
-
-  /// Function to perform the reading of manifest URIs. (For testing.)
-  ManifestReader _manifestReader;
-
-  /// Create a plugin manager with backing package map information.
-  PluginManager(this._packageMap, this.hostPackage,
-      [ManifestReader manifestReader]) {
-    _manifestReader =
-        manifestReader != null ? manifestReader : _findAndReadManifestAtUri;
-  }
-
-  /// Find a plugin manifest describing the given [pluginPackage].
-  PluginManifest findManifest(String pluginPackage) {
-    Uri uri = _packageMap[pluginPackage];
-    String contents = _manifestReader(uri);
-    if (contents == null) {
-      return null;
-    }
-    return parsePluginManifestString(contents);
-  }
-
-  /// Return [PluginDetails] derived from associated plugin manifests
-  /// corresponding to plugins specified in the given [config].
-  Iterable<PluginDetails> getPluginDetails(PluginConfig config) =>
-      config.plugins.map((PluginInfo localConfig) {
-        PluginManifest manifest = findManifest(localConfig.name);
-        return _getDetails(localConfig, manifest);
-      });
-
-  String _findAndReadManifestAtUri(Uri uri) {
-    File manifestFile = _findManifest(uri);
-    return manifestFile?.readAsStringSync();
-  }
-
-  File _findManifest(Uri uri) {
-    if (uri == null) {
-      return null;
-    }
-
-    Directory directory = new Directory.fromUri(uri);
-    File file = new File(path.join(directory.path, _manifestFileName));
-
-    return file.existsSync() ? file : null;
-  }
-
-  PluginDetails _getDetails(PluginInfo localConfig, PluginManifest manifest) {
-    if (manifest == null) {
-      return new PluginDetails.notFound(localConfig);
-    }
-    if (!manifest.contributesTo.contains(hostPackage)) {
-      return new PluginDetails.notApplicable(localConfig);
-    }
-
-    return new PluginDetails(combine(localConfig, manifest.plugin));
-  }
-}
-
-/// Describes plugin status.
-enum PluginStatus { Applicable, NotApplicable, NotFound }