structure gardening tool

tools/gardening/bin/compare_failures.dart

Index: tools/gardening/bin/compare_failures.dart
diff --git a/tools/gardening/lib/compare_failures.dart b/tools/gardening/bin/compare_failures.dart
similarity index 96%
rename from tools/gardening/lib/compare_failures.dart
rename to tools/gardening/bin/compare_failures.dart
index 5f225dd2b5de7617abdf42b656c3148a1c4af199..fc0935fdd4b04e9deaf5e752884986a46e077b1f 100644
--- a/tools/gardening/lib/compare_failures.dart
+++ b/tools/gardening/bin/compare_failures.dart
@@ -7,11 +7,10 @@
 /// Use this to detect flakiness of failures, especially timeouts.
 
 import 'dart:async';
-import 'dart:convert';
 import 'dart:io';
 
-import 'src/buildbot_structures.dart';
-import 'src/util.dart';
+import 'package:gardening/src/buildbot_structures.dart';
+import 'package:gardening/src/util.dart';
 
 main(List<String> args) async {
   if (args.length != 1) {
@@ -47,13 +46,6 @@ Future<List<BuildResult>> readBuildResults(
   return summaries;
 }
 
-/// Reads the content of [uri] as text.
-Future<String> readUriAsText(HttpClient client, Uri uri) async {
-  HttpClientRequest request = await client.getUrl(uri);
-  HttpClientResponse response = await request.close();
-  return UTF8.decode(await response.expand((l) => l).toList());
-}
-
 /// Parses the [buildUri] test log and creates a [BuildResult] for it.
 Future<BuildResult> readBuildResult(
     HttpClient client, BuildUri buildUri) async {