Table implements redepth (#162282)

As title

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

@@ -761,6 +761,12 @@ class RenderTable extends RenderBox {
     }
   }
 
+  @protected
+  @override
+  void redepthChildren() {
+    visitChildren(redepthChild);
+  }
+
   @override
   double computeMinIntrinsicWidth(double height) {
     assert(_children.length == rows * columns);

packages/flutter/test/widgets/table_test.dart

@@ -71,6 +71,36 @@ void main() {
     await run(TextDirection.rtl);
   });
 
+  testWidgets('Table widget calculate depth', (WidgetTester tester) async {
+    final UniqueKey outerTable = UniqueKey();
+    final UniqueKey innerTable = UniqueKey();
+    await tester.pumpWidget(
+      Directionality(
+        textDirection: TextDirection.ltr,
+        child: Table(
+          key: outerTable,
+          children: <TableRow>[
+            TableRow(
+              children: <Widget>[
+                Table(
+                  key: innerTable,
+                  children: const <TableRow>[
+                    TableRow(children: <Widget>[Text('AAAAAA'), Text('B'), Text('C')]),
+                  ],
+                ),
+              ],
+            ),
+          ],
+        ),
+      ),
+    );
+    final RenderObject outerTableRenderObject = tester.renderObject(find.byKey(outerTable));
+    final RenderObject innerTableRenderObject = tester.renderObject(find.byKey(innerTable));
+    final RenderObject textRenderObject = tester.renderObject(find.text('AAAAAA'));
+    expect(outerTableRenderObject.depth + 1, innerTableRenderObject.depth);
+    expect(innerTableRenderObject.depth + 1, textRenderObject.depth);
+  });
+
   testWidgets('Table widget can be detached and re-attached', (WidgetTester tester) async {
     final Widget table = Table(
       key: GlobalKey(),