Rename Instance_Trusted to Instance_Private, wire it up in Chrome.

ppapi/cpp/private/var_private.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/cpp/private/var_private.h"
 
 #include "ppapi/c/dev/ppb_var_deprecated.h"
-#include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/private/instance_private.h"
 #include "ppapi/cpp/logging.h"
 #include "ppapi/cpp/module_impl.h"
 #include "ppapi/cpp/dev/scriptable_object_deprecated.h"
 
 namespace pp {
 
 namespace {
 
 template <> const char* interface_name<PPB_Var_Deprecated>() {
   return PPB_VAR_DEPRECATED_INTERFACE;
 }
 
 }  // namespace
 
 using namespace deprecated;
 
-VarPrivate::VarPrivate(Instance* instance, ScriptableObject* object) {
+VarPrivate::VarPrivate(InstancePrivate* instance, ScriptableObject* object) {
   if (has_interface<PPB_Var_Deprecated>()) {
     var_ = get_interface<PPB_Var_Deprecated>()->CreateObject(
         instance->pp_instance(), object->GetClass(), object);
     needs_release_ = true;
   } else {
     var_.type = PP_VARTYPE_NULL;
     var_.padding = 0;
     needs_release_ = false;
   }
 }
@@ skipping 141 matching lines @@
                             const Var& arg2, const Var& arg3, const Var& arg4,
                             Var* exception) {
   if (!has_interface<PPB_Var_Deprecated>())
     return Var();
   PP_Var args[4] = {arg1.pp_var(), arg2.pp_var(), arg3.pp_var(), arg4.pp_var()};
   return Var(PassRef(), get_interface<PPB_Var_Deprecated>()->Call(
       var_, method_name.pp_var(), 4, args, OutException(exception).get()));
 }
 
 }  // namespace pp