Relanding this with fixes to the mac dbg builder

ppapi/proxy/resource_creation_proxy.cc

Index: ppapi/proxy/resource_creation_proxy.cc
===================================================================
--- ppapi/proxy/resource_creation_proxy.cc	(revision 118405)
+++ ppapi/proxy/resource_creation_proxy.cc	(working copy)
@@ -33,10 +33,10 @@
 #include "ppapi/shared_impl/function_group_base.h"
 #include "ppapi/shared_impl/host_resource.h"
 #include "ppapi/shared_impl/ppb_audio_config_shared.h"
-#include "ppapi/shared_impl/ppb_font_shared.h"
 #include "ppapi/shared_impl/ppb_input_event_shared.h"
 #include "ppapi/shared_impl/ppb_resource_array_shared.h"
 #include "ppapi/shared_impl/ppb_url_request_info_shared.h"
+#include "ppapi/shared_impl/private/ppb_font_shared.h"
 #include "ppapi/shared_impl/var.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/ppb_image_data_api.h"
@@ -152,10 +152,12 @@
 PP_Resource ResourceCreationProxy::CreateFontObject(
     PP_Instance instance,
     const PP_FontDescription_Dev* description) {
-  if (!PPB_Font_Shared::IsPPFontDescriptionValid(*description))
+  PluginDispatcher* dispatcher =
+      PluginDispatcher::GetForInstance(instance);
+  if (!dispatcher)
     return 0;
-  return (new Font(HostResource::MakeInstanceOnly(instance), *description))->
-      GetReference();
+  return PPB_Font_Shared::CreateAsProxy(instance, *description,
+                                        dispatcher->preferences());
 }
 
 PP_Resource ResourceCreationProxy::CreateGraphics2D(PP_Instance instance,