Include build revision in BuildResult

tools/gardening/lib/src/buildbot_structures.dart

 // 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 'util.dart';
 
 /// The [Uri] of a build step stdio log split into its subparts.
 class BuildUri {
   final String botName;
   final int buildNumber;
@@ skipping 89 matching lines @@
 class BuildResult {
   final BuildUri buildUri;
 
   /// The absolute build number, if found.
   ///
   /// The [buildUri] can be created with a relative build number, such as `-2`
   /// which means the second-to-last build. The absolute build number, a
   /// positive number, is read from the build results.
   final int buildNumber;
 
+  final String buildRevision;
+
   final List<TestStatus> _results;
   final List<TestFailure> _failures;
   final List<Timing> _timings;
 
-  BuildResult(this.buildUri, this.buildNumber, this._results, this._failures,
-      this._timings);
+  BuildResult(this.buildUri, this.buildNumber, this.buildRevision,
+      this._results, this._failures, this._timings);
 
   /// `true` of the build result has test failures.
   bool get hasFailures => _failures.isNotEmpty;
 
   /// Returns the top-20 timings found in the build log.
   Iterable<Timing> get timings => _timings;
 
   /// Returns the [TestStatus] for all tests.
   Iterable<TestStatus> get results => _results;
 
@@ skipping 92 matching lines @@
 
 /// The result of a single test for a single test step.
 class TestStatus {
   final TestConfiguration config;
   final String status;
 
   TestStatus(this.config, this.status);
 
   String toString() => '$config: $status';
 }