[analysis_server] fix benchmark tests

Fixes #51207

Change-Id: I3bd20fa283ed60cfd3610edfc517a3872206f654
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/280260
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>
diff --git a/pkg/analysis_server/benchmark/perf/benchmarks_impl.dart b/pkg/analysis_server/benchmark/perf/benchmarks_impl.dart
index 1525cd1..48584d2 100644
--- a/pkg/analysis_server/benchmark/perf/benchmarks_impl.dart
+++ b/pkg/analysis_server/benchmark/perf/benchmarks_impl.dart
@@ -17,6 +17,7 @@
 ///   - analysis-server-completion
 class AnalysisBenchmark extends Benchmark {
   final AbstractBenchmarkTest Function() testConstructor;
+
   AnalysisBenchmark(ServerBenchmark benchmarkTest)
       : testConstructor = benchmarkTest.testConstructor,
         super(
@@ -67,7 +68,7 @@
     const kGroupCount = 10;
 
     var filePath =
-        path.join(analysisServerSrcPath, 'lib/src/analysis_server.dart');
+        path.join(analysisServerSrcPath, 'lib', 'src', 'analysis_server.dart');
     var contents = File(filePath).readAsStringSync();
 
     await test.openFile(filePath, contents);
@@ -112,7 +113,7 @@
     const kGroupCount = 5;
 
     var filePath =
-        path.join(analysisServerSrcPath, 'lib/src/analysis_server.dart');
+        path.join(analysisServerSrcPath, 'lib', 'src', 'analysis_server.dart');
     var contents = File(filePath).readAsStringSync();
 
     // Get the future for `analysisFinished` *before* the call to [openFile]
@@ -147,6 +148,7 @@
 ///   - analysis-server-cold-memory
 class ColdAnalysisBenchmark extends Benchmark {
   final AbstractBenchmarkTest Function() testConstructor;
+
   ColdAnalysisBenchmark(ServerBenchmark benchmarkTest)
       : testConstructor = benchmarkTest.testConstructor,
         super(