Remove DCHECK in column balancer that failed because of flexbox bugs.

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

Index: third_party/WebKit/Source/core/layout/ColumnBalancer.cpp
diff --git a/third_party/WebKit/Source/core/layout/ColumnBalancer.cpp b/third_party/WebKit/Source/core/layout/ColumnBalancer.cpp
index d7aeba04b698b7273d75254f816f2b2ff43beaa6..69d72d477019728fbf13f591ec2721eaa9e49256 100644
--- a/third_party/WebKit/Source/core/layout/ColumnBalancer.cpp
+++ b/third_party/WebKit/Source/core/layout/ColumnBalancer.cpp
@@ -243,9 +243,6 @@ void InitialColumnHeightFinder::examineLine(const RootInlineBox& line) {
     minimumLogialHeight += lineTopInFlowThread;
   m_tallestUnbreakableLogicalHeight =
       std::max(m_tallestUnbreakableLogicalHeight, minimumLogialHeight);
-  DCHECK(
-      isFirstAfterBreak(lineTopInFlowThread) || !line.paginationStrut() ||
-      !isLogicalTopWithinBounds(lineTopInFlowThread - line.paginationStrut()));
   if (isFirstAfterBreak(lineTopInFlowThread) &&
       m_lastBreakSeen != lineTopInFlowThread) {
     m_lastBreakSeen = lineTopInFlowThread;