Add a working SkFontMgr_fontconfig.

tests/FontHostTest.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Resources.h"
 #include "SkEndian.h"
 #include "SkFontStream.h"
 #include "SkOSFile.h"
 #include "SkPaint.h"
 #include "SkStream.h"
 #include "SkTypeface.h"
 #include "Test.h"
 
 //#define DUMP_TABLES
 //#define DUMP_TTC_TABLES
 
 #define kFontTableTag_head          SkSetFourByteTag('h', 'e', 'a', 'd')
 #define kFontTableTag_hhea          SkSetFourByteTag('h', 'h', 'e', 'a')
 #define kFontTableTag_maxp          SkSetFourByteTag('m', 'a', 'x', 'p')
 
 static const struct TagSize {
     SkFontTableTag  fTag;
     size_t          fSize;
 } gKnownTableSizes[] = {
     {   kFontTableTag_head,         54 },
     {   kFontTableTag_hhea,         36 },
-    {   kFontTableTag_maxp,         32 },

[bungeman-skia, 2014/07/17 20:38:30]

The 'maxp' table comes in two sizes, 32 (for TT) and 6 (for CFF).

[tomhudson, 2014/07/17 21:14:46]

So why are we removing it?

[bungeman-skia, 2014/07/17 22:08:27]

This was more of a note to Mike, but the one place where this is used is just
checking that the GetTableTags and GetTableSize work and return sane values for
system font streams. This CL (at least on my local machine) allows some CFF
style fonts show up, which invalidates the premise that the 'maxp' table is of a
single given size. In other words, this was already an incorrect assertion, it
just happens that we don't have many CFF fonts installed on our test machines,
so we haven't seen the a failure of this assumption in the past. In theory we
could add a version number to go with a size but that's just a complication
which doesn't add much to this test.

 };
 
 // Test that getUnitsPerEm() agrees with a direct lookup in the 'head' table
 // (if that table is available).
 static void test_unitsPerEm(skiatest::Reporter* reporter, SkTypeface* face) {
     int nativeUPEM = face->getUnitsPerEm();
 
     int tableUPEM = -1;
     size_t size = face->getTableSize(kFontTableTag_head);
     if (size) {
@@ skipping 259 matching lines @@
     }
 }
 
 DEF_TEST(FontHost, reporter) {
     test_tables(reporter);
     test_fontstream(reporter);
     test_advances(reporter);
 }
 
 // need tests for SkStrSearch