Check for Unicode in Font before ICU call

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
@@ skipping 543 matching lines @@
     if (variant == NormalVariant) {
         page->setGlyphDataForCharacter(c, data.glyph, data.fontData);
         data.fontData->setMaxGlyphPageTreeLevel(std::max(data.fontData->maxGlyphPageTreeLevel(), node->level()));
     }
     return std::make_pair(data, page);
 }
 
 bool Font::primaryFontHasGlyphForCharacter(UChar32 character) const
 {
     ASSERT(primaryFont());
-    unsigned pageNumber = (character / GlyphPage::size);
-
-    GlyphPageTreeNode* node = GlyphPageTreeNode::getNormalRootChild(primaryFont(), pageNumber);
-    GlyphPage* page = node->page();
-
-    return page && page->glyphForCharacter(character);
+    return primaryFont()->fontHasGlyphForCharacter(character);
 }
 
 // FIXME: This function may not work if the emphasis mark uses a complex script, but none of the
 // standard emphasis marks do so.
 bool Font::getEmphasisMarkGlyphData(const AtomicString& mark, GlyphData& glyphData) const
 {
     if (mark.isEmpty())
         return false;
 
     UChar32 character = mark[0];
@@ skipping 368 matching lines @@
                 if (delta <= 0)
                     break;
             }
         }
     }
 
     return offset;
 }
 
 } // namespace blink