Revert "Fix overflow clipping/fading for text (#27892)" (#27966)

This reverts commit 46cabdab.

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

@@ -287,9 +287,9 @@ class RenderParagraph extends RenderBox {
     // Other _textPainter state like didExceedMaxLines will also be affected.
     // See also RenderEditable which has a similar issue.
     final Size textSize = _textPainter.size;
+    final bool didOverflowHeight = _textPainter.didExceedMaxLines;
     size = constraints.constrain(textSize);
 
-    final bool didOverflowHeight = size.height < textSize.height || _textPainter.didExceedMaxLines;
     final bool didOverflowWidth = size.width < textSize.width;
     // TODO(abarth): We're only measuring the sizes of the line boxes here. If
     // the glyphs draw outside the line boxes, we might think that there isn't

packages/flutter/test/widgets/text_test.dart

@@ -7,7 +7,6 @@ import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter/widgets.dart';
 import 'package:flutter/foundation.dart';
 
-import '../rendering/mock_canvas.dart';
 import 'semantics_tester.dart';
 
 void main() {
@@ -247,72 +246,4 @@ void main() {
     expect(semantics, hasSemantics(expectedSemantics, ignoreTransform: true, ignoreId: true));
     semantics.dispose();
   }, skip: true); // TODO(jonahwilliams): correct once https://github.com/flutter/flutter/issues/20891 is resolved.
-
-  testWidgets('Overflow is clipping correctly - short text with overflow: clip', (WidgetTester tester) async {
-    await _pumpTextWidget(
-      tester: tester,
-      overflow: TextOverflow.clip,
-      text: 'Hi',
-    );
-
-    expect(find.byType(Text), isNot(paints..clipRect()));
-  });
-
-  testWidgets('Overflow is clipping correctly - long text with overflow: ellipsis', (WidgetTester tester) async {
-    await _pumpTextWidget(
-      tester: tester,
-      overflow: TextOverflow.ellipsis,
-      text: 'a long long long long text, should be clip',
-    );
-
-    expect(find.byType(Text), paints..clipRect(rect: Rect.fromLTWH(0, 0, 50, 50)));
-  });
-
-  testWidgets('Overflow is clipping correctly - short text with overflow: ellipsis', (WidgetTester tester) async {
-    await _pumpTextWidget(
-      tester: tester,
-      overflow: TextOverflow.ellipsis,
-      text: 'Hi',
-    );
-
-    expect(find.byType(Text), isNot(paints..clipRect()));
-  });
-
-  testWidgets('Overflow is clipping correctly - long text with overflow: fade', (WidgetTester tester) async {
-    await _pumpTextWidget(
-      tester: tester,
-      overflow: TextOverflow.fade,
-      text: 'a long long long long text, should be clip',
-    );
-
-    expect(find.byType(Text), paints..clipRect(rect: Rect.fromLTWH(0, 0, 50, 50)));
-  });
-
-  testWidgets('Overflow is clipping correctly - short text with overflow: fade', (WidgetTester tester) async {
-    await _pumpTextWidget(
-      tester: tester,
-      overflow: TextOverflow.fade,
-      text: 'Hi',
-    );
-
-    expect(find.byType(Text), isNot(paints..clipRect()));
-  });
-}
-
-Future<void> _pumpTextWidget({ WidgetTester tester, String text, TextOverflow overflow }) {
-  return tester.pumpWidget(
-    Directionality(
-      textDirection: TextDirection.ltr,
-      child: Center(
-        child: Container(
-          width: 50.0,
-          height: 50.0,
-          child: Text(
-            text,
-            overflow: overflow,
-          ),
-        ),
-      ),
-    ),
-  );
 }