Remove assert disabler for UpdatePaginationRecursive

From code inspection and tests, there are no longer any compositing
queries when calling UpdatePaginationRecursive.

Bug: 1007989
Change-Id: I74dea1aee271763e0d464c98ca3458015d3accd2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1901359Reviewed-by: Philip Rogers <pdr@chromium.org>
Commit-Queue: Daniel Libby <dlibby@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#714057}

third_party/blink/renderer/core/paint/paint_layer.cc

@@ -323,12 +323,7 @@ void PaintLayer::UpdateLayerPositionsAfterLayout() {
   ClearClipRects();
   UpdateLayerPositionRecursive();
 
-  {
-    // FIXME: Remove incremental compositing updates after fixing the
-    // chicken/egg issues, https://crbug.com/343756
-    DisableCompositingQueryAsserts disabler;
-    UpdatePaginationRecursive(EnclosingPaginationLayer());
-  }
+  UpdatePaginationRecursive(EnclosingPaginationLayer());
 }
 
 void PaintLayer::UpdateLayerPositionRecursive() {