Enable pepper threading by default.

ppapi/proxy/ppp_instance_private_proxy_unittest.cc

Index: ppapi/proxy/ppp_instance_private_proxy_unittest.cc
diff --git a/ppapi/proxy/ppp_instance_private_proxy_unittest.cc b/ppapi/proxy/ppp_instance_private_proxy_unittest.cc
index 58bac927529803b1939c766052bf9b5ea9adf407..df1af0ccf0744e7f8448394856ff834ed4d1b954 100644
--- a/ppapi/proxy/ppp_instance_private_proxy_unittest.cc
+++ b/ppapi/proxy/ppp_instance_private_proxy_unittest.cc
@@ -13,7 +13,9 @@
 #include "ppapi/c/ppp_instance.h"
 #include "ppapi/c/private/ppp_instance_private.h"
 #include "ppapi/proxy/host_dispatcher.h"
+#include "ppapi/proxy/interface_list.h"
 #include "ppapi/proxy/ppapi_proxy_test.h"
+#include "ppapi/shared_impl/ppapi_permissions.h"
 #include "ppapi/shared_impl/ppb_var_shared.h"
 #include "ppapi/shared_impl/var.h"
 
@@ -159,6 +161,10 @@ TEST_F(PPP_Instance_Private_ProxyTest, DISABLED_PPPInstancePrivate) {
   ASSERT_NE(kInstance, pp_instance());
   HostDispatcher::SetForInstance(kInstance, host().host_dispatcher());
 
+  // Requires dev interfaces.
+  InterfaceList::SetProcessGlobalPermissions(
+      PpapiPermissions::AllPermissions());
+
   // This file-local global is used by the PPP_Instance mock above in order to
   // access PPB_Var_Deprecated.
   plugin_dispatcher = plugin().plugin_dispatcher();