fix dartanalyzer find options in bazel workspace

pkg/analyzer_cli/test/utils.dart

Index: pkg/analyzer_cli/test/utils.dart
diff --git a/pkg/analyzer_cli/test/utils.dart b/pkg/analyzer_cli/test/utils.dart
index 85fa759e16b72da7fac74e1ae24dd2acf1bc107c..3e61ed24fe62dd05849429d147c80ec464fabb2f 100644
--- a/pkg/analyzer_cli/test/utils.dart
+++ b/pkg/analyzer_cli/test/utils.dart
@@ -4,6 +4,7 @@
 
 library analyzer_cli.test.utils;
 
+import 'dart:async';
 import 'dart:io';
 import 'dart:mirrors';
 
@@ -52,4 +53,31 @@ dynamic withTempDir(fn(String path)) {
   }
 }
 
+/// Creates a temporary directory and passes its path to [fn]. Once [fn]
+/// completes, the temporary directory and all its contents will be deleted.
+///
+/// Returns the return value of [fn].
+Future<dynamic> withTempDirAsync(Future<dynamic> fn(String path)) async {
+  var tempDir = (await Directory.systemTemp.createTemp('analyzer_')).path;
+  try {
+    return await fn(tempDir);
+  } finally {
+    await new Directory(tempDir).delete(recursive: true);
+  }
+}
+
+/// Recursively copy the specified [src] directory (or file)
+/// to the specified destination path.
+Future<Null> recursiveCopy(FileSystemEntity src, String dstPath) async {
+  if (src is Directory) {
+    await (new Directory(dstPath)).create(recursive: true);
+    for (FileSystemEntity entity in src.listSync()) {
+      await recursiveCopy(
+          entity, pathos.join(dstPath, pathos.basename(entity.path)));
+    }
+  } else if (src is File) {
+    await src.copy(dstPath);
+  }
+}
+
 class _TestUtils {}