Support sideloaded fonts for DirectWrite

Source/platform/fonts/win/FontCacheSkiaWin.cpp

 /*
  * Copyright (C) 2006, 2007 Apple Computer, Inc.
  * Copyright (c) 2006, 2007, 2008, 2009, 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.
@@ skipping 24 matching lines @@
 #include "RuntimeEnabledFeatures.h"
 #include "SkFontMgr.h"
 #include "SkTypeface_win.h"
 #include "platform/fonts/FontDescription.h"
 #include "platform/fonts/SimpleFontData.h"
 #include "platform/fonts/harfbuzz/FontPlatformDataHarfbuzz.h"
 #include "platform/fonts/win/FontFallbackWin.h"
 
 namespace WebCore {
 
+HashMap<String, SkTypeface*>* FontCache::s_sideloadedFonts = 0;
+
+// static
+void FontCache::addSideloadedFont(SkTypeface* typeface)
+{
+    if (!s_sideloadedFonts)
+        s_sideloadedFonts = new HashMap<String, SkTypeface*>;
+    SkString name;
+    typeface->getFamilyName(&name);
+    s_sideloadedFonts->set(name.c_str(), typeface);
+}
+
 FontCache::FontCache()
     : m_purgePreventCount(0)
 {
     SkFontMgr* fontManager;
 
     if (s_useDirectWrite) {
         fontManager = SkFontMgr_New_DirectWrite(s_directWriteFactory);
     } else {
         fontManager = SkFontMgr_New_GDI();
         // Subpixel text positioning is not supported by the GDI backend.
@@ skipping 208 matching lines @@
         result->setMinSizeForAntiAlias(
             minSizeForAntiAlias(fontDescription.script()));
         if (fontRequiresFullHinting(family))
             result->setHinting(SkPaint::kFull_Hinting);
     }
 
     return result;
 }
 
 }