Update for Flutter 3.10 beta (#1746)

## Pre-launch Checklist

- [x] I read the [Flutter Style Guide] _recently_, and have followed its
advice.
- [x] I signed the [CLA].
- [x] I read the [Contributors Guide].
- [x] I updated/added relevant documentation (doc comments with `///`).
- [ ] All existing and new tests are passing.

---------

Co-authored-by: David Iglesias <ditman@gmail.com>
Co-authored-by: Mark Thompson <2554588+MarkTechson@users.noreply.github.com>
Co-authored-by: John Ryan <ryjohn@google.com>

experimental/material_3_demo/test/component_screen_test.dart

@@ -37,7 +37,8 @@ void main() {
     expect(find.widgetWithText(FloatingActionButton, 'Create'), findsOneWidget);
 
     // Icon buttons
-    expect(find.widgetWithIcon(IconButton, Icons.settings_outlined), findsNWidgets(8));
+    expect(find.widgetWithIcon(IconButton, Icons.settings_outlined),
+        findsNWidgets(8));
 
     // Segmented buttons
     expect(find.byType(SegmentedButton<Calendar>), findsOneWidget);
@@ -350,8 +351,7 @@ void main() {
 void widgetSetup(WidgetTester tester, double windowWidth,
     {double? windowHeight}) {
   final height = windowHeight ?? 846;
-  tester.binding.window.devicePixelRatioTestValue = (2);
-  final dpi = tester.binding.window.devicePixelRatio;
-  tester.binding.window.physicalSizeTestValue =
-      Size(windowWidth * dpi, height * dpi);
+  tester.view.devicePixelRatio = 2;
+  final dpi = tester.view.devicePixelRatio;
+  tester.view.physicalSize = Size(windowWidth * dpi, height * dpi);
 }