Add flag to force complex text for tests

third_party/WebKit/Source/platform/fonts/Font.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2006, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (c) 2007, 2008, 2010 Google Inc. All rights reserved.
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #include "config.h"
 #include "platform/fonts/Font.h"
 
+#include "platform/LayoutTestSupport.h"
 #include "platform/LayoutUnit.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/fonts/Character.h"
 #include "platform/fonts/FontCache.h"
 #include "platform/fonts/FontFallbackList.h"
 #include "platform/fonts/GlyphBuffer.h"
 #include "platform/fonts/GlyphPageTreeNode.h"
 #include "platform/fonts/SimpleFontData.h"
 #include "platform/fonts/shaping/HarfBuzzFace.h"
 #include "platform/fonts/shaping/HarfBuzzShaper.h"
@@ skipping 265 matching lines @@
     FontCachePurgePreventer purgePreventer;
 
     if (codePath(TextRunPaintInfo(run)) != ComplexPath && !fontDescription().typesettingFeatures())
         return offsetForPositionForSimpleText(run, x, includePartialGlyphs);
 
     return offsetForPositionForComplexText(run, x, includePartialGlyphs);
 }
 
 CodePath Font::codePath(const TextRunPaintInfo& runInfo) const
 {
-    if (RuntimeEnabledFeatures::alwaysUseComplexTextEnabled())
+    if (RuntimeEnabledFeatures::alwaysUseComplexTextEnabled()
+        || LayoutTestSupport::alwaysUseComplexTextForTest()) {
         return ComplexPath;
+    }
 
     const TextRun& run = runInfo.run;
 
     if (fontDescription().typesettingFeatures() && (runInfo.from || runInfo.to != run.length()))
         return ComplexPath;
 
     if (m_fontDescription.featureSettings() && m_fontDescription.featureSettings()->size() > 0 && m_fontDescription.letterSpacing() == 0)
         return ComplexPath;
 
     if (m_fontDescription.isVerticalBaseline())
@@ skipping 498 matching lines @@
 {
     return m_fontFallbackList && m_fontFallbackList->loadingCustomFonts();
 }
 
 bool Font::isFallbackValid() const
 {
     return !m_fontFallbackList || m_fontFallbackList->isValid();
 }
 
 } // namespace blink