PPAPI: Add PluginPrivateFileSystem

ppapi/proxy/ppb_instance_proxy.cc

Index: ppapi/proxy/ppb_instance_proxy.cc
diff --git a/ppapi/proxy/ppb_instance_proxy.cc b/ppapi/proxy/ppb_instance_proxy.cc
index 1997f8900826cf6bac5a187d499be3260dea7508..98f7a5bcc7aa519607cd816f23fd8480a241c6aa 100644
--- a/ppapi/proxy/ppb_instance_proxy.cc
+++ b/ppapi/proxy/ppb_instance_proxy.cc
@@ -29,6 +29,7 @@
 #include "ppapi/proxy/network_proxy_resource.h"
 #include "ppapi/proxy/pdf_resource.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
+#include "ppapi/proxy/plugin_private_file_system_private_resource.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/serialized_var.h"
 #include "ppapi/proxy/truetype_font_singleton_resource.h"
@@ -383,6 +384,10 @@ Resource* PPB_Instance_Proxy::GetSingletonResource(PP_Instance instance,
     case NETWORK_PROXY_SINGLETON_ID:
       new_singleton = new NetworkProxyResource(connection, instance);
       break;
+    case PLUGIN_PRIVATE_FILE_SYSTEM_SINGLETON_ID:
+      new_singleton =
+          new PluginPrivateFileSystemPrivateResource(connection, instance);
+      break;
     case TRUETYPE_FONT_SINGLETON_ID:
       new_singleton = new TrueTypeFontSingletonResource(connection, instance);
       break;