Convert pepper font list to new resource system.

ppapi/proxy/browser_font_singleton_resource.cc

+// Copyright (c) 2012 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/proxy/browser_font_singleton_resource.h"
+
+#include "ppapi/proxy/ppapi_messages.h"
+#include "ppapi/shared_impl/var.h"
+
+namespace ppapi {
+namespace proxy {
+
+BrowserFontSingletonResource::BrowserFontSingletonResource(
+    Connection connection,
+    PP_Instance instance)
+    : PluginResource(connection, instance) {
+  SendCreate(BROWSER, PpapiHostMsg_BrowserFontSingleton_Create());
+}
+
+BrowserFontSingletonResource::~BrowserFontSingletonResource() {
+}
+
+thunk::PPB_BrowserFont_Singleton_API*
+BrowserFontSingletonResource::AsPPB_BrowserFont_Singleton_API() {
+  return this;
+}
+
+PP_Var BrowserFontSingletonResource::GetFontFamilies(PP_Instance instance) {
+  if (families_.empty()) {
+    SyncCall<PpapiPluginMsg_BrowserFontSingleton_GetFontFamiliesReply>(
+        BROWSER, PpapiHostMsg_BrowserFontSingleton_GetFontFamilies(),
+        &families_);
+  }
+  return StringVar::StringToPPVar(families_);
+}
+
+}  // namespace proxy
+}  // namespace ppapi