Don't call paginatedContentWasLaidOut() until we have the final layout.

third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp

Index: third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
index 927e9aa08afcc6f7d6ea13b02746399476197f44..6a3f12869f1c02d64c4b8b1551c7327c96ecd864 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
@@ -726,6 +726,8 @@ void LayoutBlockFlow::layoutBlockChild(LayoutBox& child, BlockChildrenLayoutInfo
         // Keep track of the break-after value of the child, so that it can be joined with the
         // break-before value of the next in-flow object at the next class A break point.
         layoutInfo.setPreviousBreakAfterValue(child.breakAfter());
+
+        paginatedContentWasLaidOut(child.logicalBottom());
     }
 
     if (child.isLayoutMultiColumnSpannerPlaceholder()) {
@@ -787,8 +789,6 @@ LayoutUnit LayoutBlockFlow::adjustBlockChildForPagination(LayoutUnit logicalTop,
         }
     }
 
-    paginatedContentWasLaidOut(newLogicalTop + child.logicalHeight());
-
     // Similar to how we apply clearance. Go ahead and boost height() to be the place where we're going to position the child.
     setLogicalHeight(logicalHeight() + (newLogicalTop - logicalTop));