base: Use std::move() instead of Pass() for real movable types.

base/trace_event/trace_event_argument_unittest.cc

Index: base/trace_event/trace_event_argument_unittest.cc
diff --git a/base/trace_event/trace_event_argument_unittest.cc b/base/trace_event/trace_event_argument_unittest.cc
index c1233ac3a3c85d60a50e80746dde6a280ba40569..c9ccdb47ce4dc748e2f182da12f80b417e666de2 100644
--- a/base/trace_event/trace_event_argument_unittest.cc
+++ b/base/trace_event/trace_event_argument_unittest.cc
@@ -3,6 +3,9 @@
 // found in the LICENSE file.
 
 #include "base/trace_event/trace_event_argument.h"
+
+#include <utility>
+
 #include "base/values.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -106,11 +109,11 @@ TEST(TraceEventArgumentTest, PassBaseValue) {
   list_value->AppendBoolean(false);
   list_value->AppendInteger(1);
   list_value->AppendString("in_list");
-  list_value->Append(dict_value.Pass());
+  list_value->Append(std::move(dict_value));
 
   scoped_refptr<TracedValue> value = new TracedValue();
   value->BeginDictionary("outer_dict");
-  value->SetValue("inner_list", list_value.Pass());
+  value->SetValue("inner_list", std::move(list_value));
   value->EndDictionary();
 
   dict_value.reset();