Check for Unicode in Font before ICU call

Source/platform/fonts/SimpleFontData.cpp

 /*
  * Copyright (C) 2005, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 442 matching lines @@
     SkPaint paint;
     m_platformData.setupPaint(&paint);
     paint.setTextEncoding(SkPaint::kUTF16_TextEncoding);
     if (paint.textToGlyphs(&normalizedCharacters[0], normalizedLength * 2, 0)) {
         addResult.storedValue->value = true;
         return true;
     }
     return false;
 }
 
+bool SimpleFontData::fontHasGlyphForCharacter(UChar32 character) const
+{
+    unsigned pageNumber = (character / GlyphPage::size);

[eae, 2015/02/10 15:40:12]

Remove unnecessary parentheses.

[h.joshi, 2015/02/17 03:44:47]

Done.

+
+    GlyphPageTreeNode* node = GlyphPageTreeNode::getNormalRootChild(this, pageNumber);
+    GlyphPage* page = node->page();
+
+    return page && page->glyphForCharacter(character);
+}
+
 bool SimpleFontData::fillGlyphPage(GlyphPage* pageToFill, unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength) const
 {
     if (SkUTF16_IsHighSurrogate(buffer[bufferLength-1])) {
         SkDebugf("%s last char is high-surrogate", __FUNCTION__);
         return false;
     }
 
     SkTypeface* typeface = platformData().typeface();
     if (!typeface) {
         WTF_LOG_ERROR("fillGlyphPage called on an empty Skia typeface.");
         return false;
     }
 
     SkAutoSTMalloc<GlyphPage::size, uint16_t> glyphStorage(length);
     uint16_t* glyphs = glyphStorage.get();
     typeface->charsToGlyphs(buffer, SkTypeface::kUTF16_Encoding, glyphs, length);
 
     bool haveGlyphs = false;
     for (unsigned i = 0; i < length; i++) {
         if (glyphs[i]) {
             pageToFill->setGlyphDataForIndex(offset + i, glyphs[i], this);
             haveGlyphs = true;
         }
     }
 
     return haveGlyphs;
 }
 
 } // namespace blink