Push the top margin of floats past all useless fragmentainers.

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 9a0a90f993fd03c929f4d54c7b9a85bba2ee6781..0593eb3415162e18c8021f87d41606d92bc725f4 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
@@ -1039,8 +1039,10 @@ LayoutUnit LayoutBlockFlow::adjustFloatLogicalTopForPagination(
       if (pageLogicalHeightForOffset(logicalTopMarginEdge)) {
         LayoutUnit remainingSpace = pageRemainingLogicalHeightForOffset(
             logicalTopMarginEdge, AssociateWithLatterPage);
-        if (remainingSpace <= marginBefore)
-          strut += remainingSpace;
+        if (remainingSpace <= marginBefore) {
+          strut += calculatePaginationStrutToFitContent(
+              logicalTopMarginEdge, remainingSpace, marginBefore);
+        }
       }
     }
   }