Convert resources to take an instance key instead of an Instance*.

ppapi/tests/test_scrollbar.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/tests/test_scrollbar.h"
 
 #include <cstring>
 
 #include "ppapi/c/dev/ppb_testing_dev.h"
 #include "ppapi/c/pp_input_event.h"
 #include "ppapi/cpp/input_event.h"
 #include "ppapi/cpp/instance.h"
 #include "ppapi/cpp/rect.h"
 #include "ppapi/tests/testing_instance.h"
 
 REGISTER_TEST_CASE(Scrollbar);
 
 TestScrollbar::TestScrollbar(TestingInstance* instance)
     : TestCase(instance),
       WidgetClient_Dev(instance),
-      scrollbar_(*instance, true),
+      scrollbar_(instance, true),
       scrollbar_value_changed_(false) {
 }
 
 bool TestScrollbar::Init() {
   return CheckTestingInterface();
 }
 
 void TestScrollbar::RunTests(const std::string& filter) {
   instance_->LogTest("HandleEvent", TestHandleEvent());
 }
@@ skipping 25 matching lines @@
 
 void TestScrollbar::ScrollbarValueChanged(pp::Scrollbar_Dev scrollbar,
                                           uint32_t value) {
   if (scrollbar == scrollbar_)
     scrollbar_value_changed_ = true;
 }
 
 void TestScrollbar::ScrollbarOverlayChanged(pp::Scrollbar_Dev scrollbar,
                                             bool type) {
 }