Initial Kythe support for plugins

pkg/analyzer_plugin/lib/src/utilities/kythe/entries.dart

Index: pkg/analyzer_plugin/lib/src/utilities/kythe/entries.dart
diff --git a/pkg/analyzer_plugin/lib/src/utilities/kythe/entries.dart b/pkg/analyzer_plugin/lib/src/utilities/kythe/entries.dart
new file mode 100644
index 0000000000000000000000000000000000000000..66dfed7b5efc404b2a9281c728c4dd703050b975
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+++ b/pkg/analyzer_plugin/lib/src/utilities/kythe/entries.dart
@@ -0,0 +1,47 @@
+// Copyright (c) 2017, 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.
+
+import 'package:analyzer/dart/analysis/results.dart';
+import 'package:analyzer/file_system/file_system.dart';
+import 'package:analyzer_plugin/protocol/protocol_common.dart';
+import 'package:analyzer_plugin/utilities/kythe/entries.dart';
+
+/**
+ * A concrete implementation of [EntryRequest].
+ */
+class DartEntryRequestImpl implements DartEntryRequest {
+  @override
+  final ResourceProvider resourceProvider;
+
+  @override
+  final ResolveResult result;
+
+  /**
+   * Initialize a newly create request with the given data.
+   */
+  DartEntryRequestImpl(this.resourceProvider, this.result);
+
+  @override
+  String get path => result.path;
+}
+
+/**
+ * A concrete implementation of [EntryCollector].
+ */
+class EntryCollectorImpl implements EntryCollector {
+  /**
+   * A list of entries.
+   */
+  final List<KytheEntry> entries = <KytheEntry>[];
+
+  /**
+   * A list of paths to files.
+   */
+  final List<String> files = <String>[];
+
+  @override
+  void addEntry(KytheEntry entry) {
+    entries.add(entry);
+  }
+}