Fix LayoutTreeBuilderTraversal limit checks when recursing.

third_party/WebKit/Source/core/dom/LayoutTreeBuilderTraversalTest.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/dom/LayoutTreeBuilderTraversal.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/dom/Node.h"
 #include "core/dom/NodeComputedStyle.h"
@@ skipping 118 matching lines @@
             LayoutTreeBuilderTraversal::nextSiblingLayoutObject(*inner));
   EXPECT_EQ(inner->layoutObject(),
             LayoutTreeBuilderTraversal::previousSiblingLayoutObject(*sibling));
 
   EXPECT_EQ(last->layoutObject(),
             LayoutTreeBuilderTraversal::nextSiblingLayoutObject(*sibling));
   EXPECT_EQ(sibling->layoutObject(),
             LayoutTreeBuilderTraversal::previousSiblingLayoutObject(*last));
 }
 
+TEST_F(LayoutTreeBuilderTraversalTest, limits) {
+  const char* const html =
+      "<div></div>"
+      "<div style='display: contents'></div>"
+      "<div style='display: contents'>"
+      "<div style='display: contents'>"
+      "</div>"
+      "</div>"
+      "<div id='shouldNotBeFound'></div>";
+
+  setupSampleHTML(html);
+
+  Element* first = document().querySelector("div");
+
+  EXPECT_TRUE(first->layoutObject());
+  LayoutObject* nextSibling =
+      LayoutTreeBuilderTraversal::nextSiblingLayoutObject(*first, 2);
+  EXPECT_FALSE(nextSibling);  // Should not overrecurse
+}
+
 }  // namespace blink