Revert "ConstraintsTransformBox (#77994)" (#78661)

This reverts commit 8c44abc0.

packages/flutter/lib/src/rendering/debug_overflow_indicator.dart

@@ -85,8 +85,7 @@ class _OverflowRegionData {
 ///
 /// See also:
 ///
-///  * [RenderConstraintsTransformBox], [RenderUnconstrainedBox] and
-///    [RenderFlex], for examples of classes that use this indicator mixin.
+///  * [RenderUnconstrainedBox] and [RenderFlex] for examples of classes that use this indicator mixin.
 mixin DebugOverflowIndicatorMixin on RenderObject {
   static const Color _black = Color(0xBF000000);
   static const Color _yellow = Color(0xBFFFFF00);

packages/flutter/test/rendering/box_test.dart

@@ -378,48 +378,6 @@ void main() {
     expect(unconstrained.getMaxIntrinsicWidth(100.0), equals(200.0));
   });
 
-  group('ConstraintsTransfromBox', () {
-    FlutterErrorDetails? firstErrorDetails;
-    void exhaustErrors() {
-      FlutterErrorDetails? next;
-      do {
-        next = renderer.takeFlutterErrorDetails();
-        firstErrorDetails ??= next;
-      } while (next != null);
-    }
-
-    tearDown(() {
-      firstErrorDetails = null;
-    });
-
-    test('throws if the resulting constraints are not normalized', () {
-      final RenderConstrainedBox child = RenderConstrainedBox(additionalConstraints: const BoxConstraints.tightFor(height: 0));
-      final RenderConstraintsTransformBox box = RenderConstraintsTransformBox(
-        alignment: Alignment.center,
-        textDirection: TextDirection.ltr,
-        constraintsTransform: (BoxConstraints constraints) => const BoxConstraints(maxHeight: -1, minHeight: 200),
-        child: child,
-      );
-
-      layout(box, constraints: const BoxConstraints(), onErrors: exhaustErrors);
-
-      expect(firstErrorDetails?.toString(), contains('is not normalized'));
-    });
-
-    test('overflow is reported when insufficient size is given', () {
-      final RenderConstrainedBox child = RenderConstrainedBox(additionalConstraints: const BoxConstraints.tightFor(width: double.maxFinite));
-      final RenderConstraintsTransformBox box = RenderConstraintsTransformBox(
-        alignment: Alignment.center,
-        textDirection: TextDirection.ltr,
-        constraintsTransform: (BoxConstraints constraints) => constraints.copyWith(maxWidth: double.infinity),
-        child: child,
-      );
-
-      // No error reported.
-      layout(box, constraints: const BoxConstraints(), phase: EnginePhase.composite, onErrors: expectOverflowedErrors);
-    });
-  });
-
   test ('getMinIntrinsicWidth error handling', () {
     final RenderUnconstrainedBox unconstrained = RenderUnconstrainedBox(
       textDirection: TextDirection.ltr,

packages/flutter/test/rendering/debug_overflow_indicator_test.dart

@@ -36,7 +36,7 @@ void main() {
     final dynamic exception = tester.takeException();
     expect(exception, isFlutterError);
     expect(exception.diagnostics.first.level, DiagnosticLevel.summary);
-    expect(exception.diagnostics.first.toString(), startsWith('A RenderConstraintsTransformBox overflowed by '));
+    expect(exception.diagnostics.first.toString(), startsWith('A RenderUnconstrainedBox overflowed by '));
     expect(find.byType(UnconstrainedBox), paints..rect());
 
     await tester.pumpWidget(

packages/flutter/test/widgets/basic_test.dart

@@ -323,7 +323,6 @@ void main() {
       const UnconstrainedBox(constrainedAxis: Axis.vertical,).toString(),
       equals('UnconstrainedBox(alignment: Alignment.center, constrainedAxis: vertical)'),
     );
-
     expect(
       const UnconstrainedBox(constrainedAxis: Axis.horizontal, textDirection: TextDirection.rtl, alignment: Alignment.topRight).toString(),
       equals('UnconstrainedBox(alignment: Alignment.topRight, constrainedAxis: horizontal, textDirection: rtl)'),
@@ -332,32 +331,13 @@ void main() {
 
   testWidgets('UnconstrainedBox can set and update clipBehavior', (WidgetTester tester) async {
     await tester.pumpWidget(const UnconstrainedBox());
-    final RenderConstraintsTransformBox renderObject = tester.allRenderObjects.whereType<RenderConstraintsTransformBox>().first;
+    final RenderUnconstrainedBox renderObject = tester.allRenderObjects.whereType<RenderUnconstrainedBox>().first;
     expect(renderObject.clipBehavior, equals(Clip.none));
 
     await tester.pumpWidget(const UnconstrainedBox(clipBehavior: Clip.antiAlias));
     expect(renderObject.clipBehavior, equals(Clip.antiAlias));
   });
 
-  group('ConstraintsTransformBox', () {
-    test('toString', () {
-      expect(
-        const ConstraintsTransformBox(
-          constraintsTransform: ConstraintsTransformBox.unconstrained,
-        ).toString(),
-        equals('ConstraintsTransformBox(alignment: Alignment.center, constraints transform: unconstrained)'),
-      );
-      expect(
-        const ConstraintsTransformBox(
-          textDirection: TextDirection.rtl,
-          alignment: Alignment.topRight,
-          constraintsTransform: ConstraintsTransformBox.widthUnconstrained,
-        ).toString(),
-        equals('ConstraintsTransformBox(alignment: Alignment.topRight, textDirection: rtl, constraints transform: width constraints removed)'),
-      );
-    });
-  });
-
   group('ColoredBox', () {
     late _MockCanvas mockCanvas;
     late _MockPaintingContext mockContext;