Revert "Call mark* methods before attaching child (flutter#25239)" (f…

…lutter#25382)

This reverts commit 5c1f1d7.

Reverting to see if that fixes flakiness of flutter_gallery__transition_perf_with_semantics in devicelab.

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

@@ -1138,10 +1138,10 @@ abstract class RenderObject extends AbstractNode with DiagnosticableTreeMixin im
     assert(_debugCanPerformMutations);
     assert(child != null);
     setupParentData(child);
+    super.adoptChild(child);
     markNeedsLayout();
     markNeedsCompositingBitsUpdate();
     markNeedsSemanticsUpdate();
-    super.adoptChild(child);
   }
 
   /// Called by subclasses when they decide a render object is no longer a child.
@@ -1830,9 +1830,6 @@ abstract class RenderObject extends AbstractNode with DiagnosticableTreeMixin im
   bool _needsCompositingBitsUpdate = false; // set to true when a child is added
   /// Mark the compositing state for this render object as dirty.
   ///
-  /// This is called to indicate that the value for [needsCompositing] needs to
-  /// be recomputed during the next [flushCompositingBits] engine phase.
-  ///
   /// When the subtree is mutated, we need to recompute our
   /// [needsCompositing] bit, and some of our ancestors need to do the
   /// same (in case ours changed in a way that will change theirs). To
@@ -1870,9 +1867,6 @@ abstract class RenderObject extends AbstractNode with DiagnosticableTreeMixin im
   bool _needsCompositing; // initialised in the constructor
   /// Whether we or one of our descendants has a compositing layer.
   ///
-  /// If this node needs compositing as indicated by this bit, then all ancestor
-  /// nodes will also need compositing.
-  ///
   /// Only legal to call after [PipelineOwner.flushLayout] and
   /// [PipelineOwner.flushCompositingBits] have been called.
   bool get needsCompositing {

packages/flutter/test/rendering/repaint_boundary_test.dart

@@ -34,21 +34,4 @@ void main() {
     c.opacity = 0.7;
     pumpFrame(phase: EnginePhase.flushSemantics);
   });
-
-  test('Repaint boundary can get new parent after markNeedsCompositingBitsUpdate', () {
-    // Regression test for https://github.com/flutter/flutter/issues/24029.
-
-    final RenderRepaintBoundary repaintBoundary = RenderRepaintBoundary();
-    layout(repaintBoundary, phase: EnginePhase.flushSemantics);
-
-    repaintBoundary.markNeedsCompositingBitsUpdate();
-
-    renderer.renderView.child = null;
-    final RenderPadding padding = RenderPadding(
-      padding: const EdgeInsets.all(50),
-    );
-    renderer.renderView.child = padding;
-    padding.child = repaintBoundary;
-    pumpFrame(phase: EnginePhase.flushSemantics);
-  });
 }