Add flag to force complex text for tests

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 23 matching lines @@
 #include "core/html/parser/TextResourceDecoder.h"
 #include "core/layout/LayoutBlock.h"
 #include "core/layout/LayoutTextCombine.h"
 #include "core/layout/LayoutView.h"
 #include "core/layout/api/LineLayoutBox.h"
 #include "core/layout/line/AbstractInlineTextBox.h"
 #include "core/layout/line/EllipsisBox.h"
 #include "core/layout/line/GlyphOverflow.h"
 #include "core/layout/line/InlineTextBox.h"
 #include "core/paint/PaintLayer.h"
+#include "platform/LayoutTestSupport.h"
 #include "platform/fonts/Character.h"
 #include "platform/fonts/FontCache.h"
 #include "platform/geometry/FloatQuad.h"
 #include "platform/text/BidiResolver.h"
 #include "platform/text/TextBreakIterator.h"
 #include "platform/text/TextRunIterator.h"
 #include "wtf/text/CharacterNames.h"
 #include "wtf/text/StringBuffer.h"
 #include "wtf/text/StringBuilder.h"
 
@@ skipping 1771 matching lines @@
 
     long result = iterator->following(current);
     if (result == TextBreakDone)
         result = current + 1;
 
     return result;
 }
 
 bool LayoutText::computeCanUseSimpleFontCodePath() const
 {
-    if (RuntimeEnabledFeatures::alwaysUseComplexTextEnabled())
+    if (RuntimeEnabledFeatures::alwaysUseComplexTextEnabled()
+        || LayoutTestSupport::alwaysUseComplexTextForTest()) {
         return false;
+    }
     if (m_text.is8Bit())
         return true;
     return Character::characterRangeCodePath(characters16(), length()) == SimplePath;
 }
 
 #if ENABLE(ASSERT)
 
 void LayoutText::checkConsistency() const
 {
 #ifdef CHECK_CONSISTENCY
@@ skipping 35 matching lines @@
     for (InlineTextBox* box = firstTextBox(); box; box = box->nextTextBox()) {
         paintInvalidationContainer.invalidateDisplayItemClientOnBacking(*box, invalidationReason, emptyInvalidationRect, emptyInvalidationRect);
         if (box->truncation() != cNoTruncation) {
             if (EllipsisBox* ellipsisBox = box->root().ellipsisBox())
                 paintInvalidationContainer.invalidateDisplayItemClientOnBacking(*ellipsisBox, invalidationReason, emptyInvalidationRect, emptyInvalidationRect);
         }
     }
 }
 
 } // namespace blink