tracing: Make ConvertableToTraceFormat move-only scoped_ptr

cc/scheduler/scheduler_unittest.cc

 // Copyright 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 "cc/scheduler/scheduler.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <vector>
@@ skipping 189 matching lines @@
   bool will_begin_impl_frame_causes_redraw_;
   bool will_begin_impl_frame_requests_one_begin_impl_frame_;
   bool draw_will_happen_;
   bool swap_will_happen_if_draw_happens_;
   bool automatic_swap_ack_;
   int num_draws_;
   BeginFrameArgs begin_frame_args_sent_to_children_;
   BeginFrameArgs last_begin_main_frame_args_;
   base::TimeTicks posted_begin_impl_frame_deadline_;
   std::vector<const char*> actions_;
-  std::vector<scoped_refptr<base::trace_event::ConvertableToTraceFormat>>
-      states_;
+  std::vector<scoped_ptr<base::trace_event::ConvertableToTraceFormat>> states_;
   TestScheduler* scheduler_;
 };
 
 class FakeExternalBeginFrameSource : public BeginFrameSourceBase {
  public:
   explicit FakeExternalBeginFrameSource(FakeSchedulerClient* client)
       : client_(client) {}
   ~FakeExternalBeginFrameSource() override {}
 
   void AddObserver(BeginFrameObserver* obs) override {
@@ skipping 3454 matching lines @@
 }
 
 TEST_F(SchedulerTest, BeginMainFrameOnCriticalPath_AHS) {
   EXPECT_FALSE(BeginMainFrameOnCriticalPath(
       SMOOTHNESS_TAKES_PRIORITY,
       ScrollHandlerState::SCROLL_AFFECTS_SCROLL_HANDLER, kSlowDuration));
 }
 
 }  // namespace
 }  // namespace cc