Helper method for non-direct beforeChild in LayoutBlock::addChild().

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

 // Copyright 2014 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/layout/LayoutMultiColumnFlowThread.h"
 
 #include "core/layout/LayoutMultiColumnSet.h"
 #include "core/layout/LayoutMultiColumnSpannerPlaceholder.h"
 #include "core/layout/LayoutTestHelper.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 639 matching lines @@
 {
     setMulticolHTML("<div id='block'>text<div class='s'></div>text</div><div id='mc'><div id='insertBefore'>column content</div></div>");
     reparentLayoutObject("mc", "block", "insertBefore");
     EXPECT_EQ(columnSetSignature("mc"), "csc");
     destroyLayoutObject("block");
     EXPECT_EQ(columnSetSignature("mc"), "c");
 }
 
 TEST_F(MultiColumnTreeModifyingTest, InsertSubtreeWithSpannerInsideContentAndRemove)
 {
-    setMulticolHTML("<div id='block'>text<div class='s'></div>text</div><div id='mc'><div>outside<div id='insertBefore'>outside</div></div></div>");
+    setMulticolHTML("<div id='block'>text<div class='s'></div>text</div><div id='mc'><div id='newParent'>outside<div id='insertBefore'>outside</div></div></div>");
     EXPECT_EQ(columnSetSignature("mc"), "c");
-    reparentLayoutObject("mc", "block", "insertBefore");
+    reparentLayoutObject("newParent", "block", "insertBefore");
     EXPECT_EQ(columnSetSignature("mc"), "csc");
     destroyLayoutObject("block");
     EXPECT_EQ(columnSetSignature("mc"), "c");
 }
 
 TEST_F(MultiColumnTreeModifyingTest, InsertSubtreeWithSpannerAfterSpannerAndRemove)
 {
     setMulticolHTML("<div id='block'>text<div class='s'></div>text</div><div id='mc'><div class='s'></div></div>");
     EXPECT_EQ(columnSetSignature("mc"), "s");
     reparentLayoutObject("mc", "block");
@@ skipping 112 matching lines @@
 {
     setMulticolHTML("<div id='mc'>text<div id='spanner'><div class='s'></div></div>text</div>");
     EXPECT_EQ(columnSetSignature("mc"), "csc");
     destroyLayoutObject("spanner");
     EXPECT_EQ(columnSetSignature("mc"), "c");
 }
 
 } // anonymous namespace
 
 } // namespace blink