Revert of [S.P.] Don't draw frames of animated images that are offscreen.

Source/core/layout/LayoutObject.cpp

Index: Source/core/layout/LayoutObject.cpp
diff --git a/Source/core/layout/LayoutObject.cpp b/Source/core/layout/LayoutObject.cpp
index 40bd6bda06659c3cdc866565a5d609e9fba58c21..f5e859a4720a8f87dce35e4a1bd908f6355e92dc 100644
--- a/Source/core/layout/LayoutObject.cpp
+++ b/Source/core/layout/LayoutObject.cpp
@@ -1203,14 +1203,8 @@
     if (!shouldCheckForPaintInvalidation(paintInvalidationState))
         return;
 
-    PaintInvalidationReason reason = invalidatePaintIfNeeded(paintInvalidationState, paintInvalidationState.paintInvalidationContainer());
-    if (reason != PaintInvalidationDelayedFull) {
-        clearPaintInvalidationState(paintInvalidationState);
-    } else {
-        // Mark this object as needing paint invalidation again in the next frame, due to the request for delayed paint invalidation.
-        setShouldDoFullPaintInvalidation();
-    }
-
+    invalidatePaintIfNeeded(paintInvalidationState, paintInvalidationState.paintInvalidationContainer());
+    clearPaintInvalidationState(paintInvalidationState);
     invalidatePaintOfSubtreesIfNeeded(paintInvalidationState);
 }
 
@@ -3123,6 +3117,7 @@
         m_bitfields.setFullPaintInvalidationReason(reason);
     }
 
+    ASSERT(document().lifecycle().state() != DocumentLifecycle::InPaintInvalidation);
     frame()->page()->animator().scheduleVisualUpdate(); // In case that this is called outside of FrameView::updateLayoutAndStyleForPainting().
     markContainerChainForPaintInvalidation();
 }