Fix preferred width calculation for 8bit ltr runs in rtl blocks

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

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 886 matching lines @@
     int nextBreakable = -1;
     int lastWordBoundary = 0;
     float cachedWordTrailingSpaceWidth[2] = { 0, 0 }; // LTR, RTL
 
     bool breakAll = (styleToUse.wordBreak() == BreakAllWordBreak || styleToUse.wordBreak() == BreakWordBreak) && styleToUse.autoWrap();
     bool keepAll = styleToUse.wordBreak() == KeepAllWordBreak && styleToUse.autoWrap();
 
     BidiResolver<TextRunIterator, BidiCharacterRun> bidiResolver;
     BidiCharacterRun* run;
     TextDirection textDirection = styleToUse.direction();
-    if (is8Bit() || isOverride(styleToUse.unicodeBidi())) {
+    if ((is8Bit() && textDirection == LTR) || isOverride(styleToUse.unicodeBidi())) {
         run = 0;
     } else {
         TextRun textRun(text());
         BidiStatus status(textDirection, false);
         bidiResolver.setStatus(status);
         bidiResolver.setPositionIgnoringNestedIsolates(TextRunIterator(&textRun, 0));
         bool hardLineBreak = false;
         bool reorderRuns = false;
         bidiResolver.createBidiRunsForLine(TextRunIterator(&textRun, textRun.length()), NoVisualOverride, hardLineBreak, reorderRuns);
         BidiRunList<BidiCharacterRun>& bidiRuns = bidiResolver.runs();
@@ skipping 833 matching lines @@
     for (InlineTextBox* box = firstTextBox(); box; box = box->nextTextBox()) {
         paintInvalidationContainer.invalidateDisplayItemClientOnBacking(*box, invalidationReason);
         if (box->truncation() != cNoTruncation) {
             if (EllipsisBox* ellipsisBox = box->root().ellipsisBox())
                 paintInvalidationContainer.invalidateDisplayItemClientOnBacking(*ellipsisBox, invalidationReason);
         }
     }
 }
 
 } // namespace blink