tracing: Make ConvertableToTraceFormat move-only scoped_ptr

cc/trees/layer_tree_host_impl_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/trees/layer_tree_host_impl.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <cmath>
@@ skipping 7287 matching lines @@
   EXPECT_EQ(0, software_device->frames_began_);
   EXPECT_EQ(0, software_device->frames_ended_);
 
   host_impl_->OnDraw(external_transform, external_viewport, external_clip,
                      resourceless_software_draw);
 
   EXPECT_EQ(1, software_device->frames_began_);
   EXPECT_EQ(1, software_device->frames_ended_);
 
   // Call another API method that is likely to hit nullptr in this mode.
-  scoped_refptr<base::trace_event::TracedValue> state =
-      make_scoped_refptr(new base::trace_event::TracedValue());
+  scoped_ptr<base::trace_event::TracedValue> state(
+      new base::trace_event::TracedValue());
   host_impl_->ActivationStateAsValueInto(state.get());
 }
 
 TEST_F(LayerTreeHostImplTest,
        ForcedDrawToSoftwareDeviceSkipsUnsupportedLayers) {
   set_reduce_memory_result(false);
   EXPECT_TRUE(CreateHostImpl(DefaultSettings(),
                              FakeOutputSurface::CreateSoftware(
                                  make_scoped_ptr(new CountingSoftwareDevice))));
 
@@ skipping 2814 matching lines @@
     // There should not be any jitter measured till we hit the fixed point hits
     // threshold.
     float expected_jitter =
         (i == pending_tree->kFixedPointHitsThreshold) ? 500 : 0;
     EXPECT_EQ(jitter, expected_jitter);
   }
 }
 
 }  // namespace
 }  // namespace cc