Merge 121510 - [Chromium] CTFontCopyTable of MacOSX10.5 SDK doesn't work for layout tables

Source/WebCore/platform/graphics/harfbuzz/ng/HarfBuzzFaceCoreText.cpp

 /*
  * Copyright (c) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 91 matching lines @@
 
 static void releaseTableData(void* userData)
 {
     CFDataRef cfData = reinterpret_cast<CFDataRef>(userData);
     CFRelease(cfData);
 }
 
 static hb_blob_t* harfbuzzCoreTextGetTable(hb_face_t* face, hb_tag_t tag, void* userData)
 {
     FontPlatformData* platformData = reinterpret_cast<FontPlatformData*>(userData);
-    CTFontRef ctFont = platformData->ctFont();
-    CFDataRef cfData = CTFontCopyTable(ctFont, tag, kCTFontTableOptionNoOptions);
+    // It seems that CTFontCopyTable of MacOSX10.5 sdk doesn't work for
+    // OpenType layout tables(GDEF, GSUB, GPOS). Use CGFontCopyTableForTag instead.
+    CGFontRef cgFont = platformData->cgFont();
+    CFDataRef cfData = CGFontCopyTableForTag(cgFont, tag);
     if (!cfData)
         return 0;
 
     const char* data = reinterpret_cast<const char*>(CFDataGetBytePtr(cfData));
     const size_t length = CFDataGetLength(cfData);
     if (!data || !length)
         return 0;
     return hb_blob_create(data, length, HB_MEMORY_MODE_READONLY, reinterpret_cast<void*>(const_cast<__CFData*>(cfData)), releaseTableData);
 }
 
@@ skipping 15 matching lines @@
     hb_font_make_immutable(font);
     return font;
 }
 
 GlyphBufferAdvance HarfBuzzShaper::createGlyphBufferAdvance(float width, float height)
 {
     return CGSizeMake(width, height);
 }
 
 } // namespace WebCore