Fix inline outline in a corner case

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

Index: third_party/WebKit/Source/core/layout/LayoutBlock.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBlock.cpp b/third_party/WebKit/Source/core/layout/LayoutBlock.cpp
index fe8b13e07a1f7f0457d5c36469f1505eb5c51ac6..2e17b0e4a24eacad4fddb42857eb05eb1edc2e0b 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlock.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBlock.cpp
@@ -476,10 +476,7 @@ DISABLE_CFI_PERF
 void LayoutBlock::computeOverflow(LayoutUnit oldClientAfterEdge, bool) {
   m_overflow.reset();
 
-  // Add overflow from children.
   addOverflowFromChildren();
-
-  // Add in the overflow from positioned objects.
   addOverflowFromPositionedObjects();
 
   if (hasOverflowClip()) {
@@ -517,8 +514,19 @@ void LayoutBlock::computeOverflow(LayoutUnit oldClientAfterEdge, bool) {
 void LayoutBlock::addOverflowFromBlockChildren() {
   for (LayoutBox* child = firstChildBox(); child;
        child = child->nextSiblingBox()) {
-    if (!child->isFloatingOrOutOfFlowPositioned() && !child->isColumnSpanAll())
-      addOverflowFromChild(child);
+    if (child->isFloatingOrOutOfFlowPositioned() || child->isColumnSpanAll())
+      continue;
+
+    // If the child contains inline with outline and continuation, its
+    // visual overflow computed during its layout might be inaccurate because
+    // the layout of continuations might not be up-to-date at that time.
+    // Re-add overflow from inline children to ensure its overflow covers
+    // the outline which may enclose continuations.
+    if (child->isLayoutBlockFlow() &&
+        toLayoutBlockFlow(child)->containsInlineWithOutlineAndContinuation())
+      toLayoutBlockFlow(child)->addOverflowFromInlineChildren();
+
+    addOverflowFromChild(child);
   }
 }