--- a/layout/generic/nsTextFrame.cpp
+++ b/layout/generic/nsTextFrame.cpp
@@ -2462,17 +2462,16 @@ BuildTextRunsScanner::SetupLineBreakerCo
   }
   void *textPtr = buffer.AppendElements(bufferSize, fallible);
   if (!textPtr) {
     return false;
   }
 
   gfxSkipChars skipChars;
 
-  AutoTArray<int32_t,50> textBreakPoints;
   TextRunUserData dummyData;
   TextRunMappedFlow dummyMappedFlow;
   TextRunMappedFlow* userMappedFlows;
   TextRunUserData* userData;
   TextRunUserData* userDataToDestroy;
   // If the situation is particularly simple (and common) we don't need to
   // allocate userData.
   if (mMappedFlows.Length() == 1 && !mMappedFlows[0].mEndFrame &&
@@ -2483,19 +2482,16 @@ BuildTextRunsScanner::SetupLineBreakerCo
     dummyData.mMappedFlowCount = mMappedFlows.Length();
     dummyData.mLastFlowIndex = 0;
   } else {
     userData = CreateUserData(mMappedFlows.Length());
     userMappedFlows = reinterpret_cast<TextRunMappedFlow*>(userData + 1);
     userDataToDestroy = userData;
   }
 
-  uint32_t nextBreakIndex = 0;
-  nsTextFrame* nextBreakBeforeFrame = GetNextBreakBeforeFrame(&nextBreakIndex);
-
   const nsStyleText* textStyle = nullptr;
   for (uint32_t i = 0; i < mMappedFlows.Length(); ++i) {
     MappedFlow* mappedFlow = &mMappedFlows[i];
     nsTextFrame* f = mappedFlow->mStartFrame;
 
     textStyle = f->StyleText();
     nsTextFrameUtils::CompressionMode compression =
       GetCSSWhitespaceToCompressionMode(f, textStyle);
@@ -2508,22 +2504,16 @@ BuildTextRunsScanner::SetupLineBreakerCo
     int32_t contentLength = contentEnd - contentStart;
 
     TextRunMappedFlow* newFlow = &userMappedFlows[i];
     newFlow->mStartFrame = mappedFlow->mStartFrame;
     newFlow->mDOMOffsetToBeforeTransformOffset = skipChars.GetOriginalCharCount() -
       mappedFlow->mStartFrame->GetContentOffset();
     newFlow->mContentLength = contentLength;
 
-    while (nextBreakBeforeFrame && nextBreakBeforeFrame->GetContent() == content) {
-      textBreakPoints.AppendElement(
-          nextBreakBeforeFrame->GetContentOffset() + newFlow->mDOMOffsetToBeforeTransformOffset);
-      nextBreakBeforeFrame = GetNextBreakBeforeFrame(&nextBreakIndex);
-    }
-
     nsTextFrameUtils::Flags analysisFlags;
     if (frag->Is2b()) {
       NS_ASSERTION(mDoubleByteText, "Wrong buffer char size!");
       char16_t* bufStart = static_cast<char16_t*>(textPtr);
       char16_t* bufEnd = nsTextFrameUtils::TransformText(
           frag->Get2b() + contentStart, contentLength, bufStart,
           compression, &mNextRunContextInfo, &skipChars, &analysisFlags);
       textPtr = bufEnd;