Support getting the font list in Pepper. This currently only works out of

ppapi/thunk/ppb_font_thunk.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ppapi/thunk/thunk.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/ppb_font_api.h"
 #include "ppapi/thunk/resource_creation_api.h"
 
 namespace ppapi {
 namespace thunk {
 
 namespace {
 
+PP_Var GetFontFamilies(PP_Instance instance) {
+  EnterFunction<PPB_Font_FunctionAPI> enter(instance, true);
+  if (enter.failed())
+    return PP_MakeUndefined();
+  return enter.functions()->GetFontFamilies(instance);
+}
+
 PP_Resource Create(PP_Instance instance,
                    const PP_FontDescription_Dev* description) {
   EnterFunction<ResourceCreationAPI> enter(instance, true);
   if (enter.failed())
     return 0;
   return enter.functions()->CreateFontObject(instance, description);
 }
 
 PP_Bool IsFont(PP_Resource resource) {
   EnterResource<PPB_Font_API> enter(resource, false);
@@ skipping 42 matching lines @@
 int32_t PixelOffsetForCharacter(PP_Resource font_id,
                                 const PP_TextRun_Dev* text,
                                 uint32_t char_offset) {
   EnterResource<PPB_Font_API> enter(font_id, true);
   if (enter.failed())
     return -1;
   return enter.object()->PixelOffsetForCharacter(text, char_offset);
 }
 
 const PPB_Font_Dev g_ppb_font_thunk = {
+  &GetFontFamilies,
   &Create,
   &IsFont,
   &Describe,
   &DrawTextAt,
   &MeasureText,
   &CharacterOffsetForPixel,
   &PixelOffsetForCharacter
 };
 
 }  // namespace
 
 const PPB_Font_Dev* GetPPB_Font_Thunk() {
   return &g_ppb_font_thunk;
 }
 
 }  // namespace thunk
 }  // namespace ppapi