Remove cubic_bezier_perf.dart (#63028)

dev/benchmarks/macrobenchmarks/test_driver/cubic_bezier_perf.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'dart:ui';
-
-import 'package:flutter_driver/driver_extension.dart';
-import 'package:flutter/painting.dart' show DefaultShaderWarmUp, PaintingBinding;
-import 'package:macrobenchmarks/main.dart' as app;
-
-class CubicBezierShaderWarmUp extends DefaultShaderWarmUp {
-  @override
-  Future<void> warmUpOnCanvas(Canvas canvas) async {
-    await super.warmUpOnCanvas(canvas);
-
-    // Warm up the cubic shaders used by CubicBezierPage.
-    //
-    // This tests that our custom shader warm up is working properly.
-    // Without this custom shader warm up, the worst frame time is about 115ms.
-    // With this, the worst frame time is about 70ms. (Data collected on a Moto
-    // G4 based on Flutter version 704814c67a874077710524d30412337884bf0254.
-    final Path path = Path();
-    path.moveTo(20.0, 20.0);
-    // This cubic path is based on
-    // https://skia.org/user/api/SkPath_Reference#SkPath_cubicTo
-    path.cubicTo(300.0, 80.0, -140.0, 90.0, 220.0, 10.0);
-    final Paint paint = Paint();
-    paint.isAntiAlias = true;
-    paint.strokeWidth = 18.0;
-    paint.style = PaintingStyle.stroke;
-    paint.strokeCap = StrokeCap.round;
-    canvas.drawPath(path, paint);
-  }
-}
-
-void main() {
-  PaintingBinding.shaderWarmUp = CubicBezierShaderWarmUp();
-  enableFlutterDriverExtension();
-  app.main();
-}

dev/devicelab/lib/tasks/perf_tests.dart

@@ -95,8 +95,9 @@ TaskFunction createCubicBezierPerfTest() {
 TaskFunction createCubicBezierPerfSkSLWarmupTest() {
   return PerfTestWithSkSL(
     '${flutterDirectory.path}/dev/benchmarks/macrobenchmarks',
-    'test_driver/cubic_bezier_perf.dart',
+    'test_driver/run_app.dart',
     'cubic_bezier_perf',
+    testDriver: 'test_driver/cubic_bezier_perf_test.dart',
   ).run;
 }