Reland r172943 "Make CSSFontFace::willUseFontData() load fonts with unicode-range"

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.
  *
  * 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.
@@ skipping 227 matching lines @@
     if (!run.characterScanForCodePath())
         return SimplePath;
 
     if (run.is8Bit())
         return SimplePath;
 
     // Start from 0 since drawing and highlighting also measure the characters before run->from.
     return Character::characterRangeCodePath(run.characters16(), run.length());
 }
 
-void Font::willUseFontData() const
+void Font::willUseFontData(UChar32 character) const
 {
     const FontFamily& family = fontDescription().family();
     if (m_fontFallbackList && m_fontFallbackList->fontSelector() && !family.familyIsEmpty())
-        m_fontFallbackList->fontSelector()->willUseFontData(fontDescription(), family.family());
+        m_fontFallbackList->fontSelector()->willUseFontData(fontDescription(), family.family(), character);
 }
 
 static inline bool isInRange(UChar32 character, UChar32 lowerBound, UChar32 upperBound)
 {
     return character >= lowerBound && character <= upperBound;
 }
 
 static bool shouldIgnoreRotation(UChar32 character)
 {
     if (character == 0x000A7 || character == 0x000A9 || character == 0x000AE)
@@ skipping 567 matching lines @@
                 if (delta <= 0)
                     break;
             }
         }
     }
 
     return offset;
 }
 
 }