blink: Remove CHECK_CONSISTENCY.

third_party/WebKit/Source/core/layout/line/InlineFlowBox.cpp

Index: third_party/WebKit/Source/core/layout/line/InlineFlowBox.cpp
diff --git a/third_party/WebKit/Source/core/layout/line/InlineFlowBox.cpp b/third_party/WebKit/Source/core/layout/line/InlineFlowBox.cpp
index b29697600454fc8084e3c18a6dccf8a9d188bf41..fb1fa868a2ad2b08017f3ecb109531ef299f737e 100644
--- a/third_party/WebKit/Source/core/layout/line/InlineFlowBox.cpp
+++ b/third_party/WebKit/Source/core/layout/line/InlineFlowBox.cpp
@@ -95,7 +95,6 @@ void InlineFlowBox::AddToLine(InlineBox* child) {
   DCHECK(!child->Parent());
   DCHECK(!child->NextOnLine());
   DCHECK(!child->PrevOnLine());
-  CheckConsistency();
 
   child->SetParent(this);
   if (!first_child_) {
@@ -195,13 +194,9 @@ void InlineFlowBox::AddToLine(InlineBox* child) {
         !ToInlineFlowBox(child)->KnownToHaveNoOverflow())
       ClearKnownToHaveNoOverflow();
   }
-
-  CheckConsistency();
 }
 
 void InlineFlowBox::RemoveChild(InlineBox* child, MarkLineBoxes mark_dirty) {
-  CheckConsistency();
-
   if (mark_dirty == kMarkLineBoxesDirty && !IsDirty())
     DirtyLineBoxes();
 
@@ -217,8 +212,6 @@ void InlineFlowBox::RemoveChild(InlineBox* child, MarkLineBoxes mark_dirty) {
     child->PrevOnLine()->SetNextOnLine(child->NextOnLine());
 
   child->SetParent(nullptr);
-
-  CheckConsistency();
 }
 
 void InlineFlowBox::DeleteLine() {
@@ -1720,21 +1713,4 @@ void InlineFlowBox::ShowLineTreeAndMark(const InlineBox* marked_box1,
 
 #endif
 
-#if DCHECK_IS_ON()
-void InlineFlowBox::CheckConsistency() const {
-#ifdef CHECK_CONSISTENCY
-  DCHECK(!m_hasBadChildList);
-  const InlineBox* prev = nullptr;
-  for (const InlineBox* child = m_firstChild; child;
-       child = child->nextOnLine()) {
-    DCHECK_EQ(child->parent(), this);
-    DCHECK_EQ(child->prevOnLine(), prev);
-    prev = child;
-  }
-  DCHECK_EQ(prev, m_lastChild);
-#endif
-}
-
-#endif
-
 }  // namespace blink