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

base/trace_event/trace_event_argument_unittest.cc

 // Copyright (c) 2014 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 "base/trace_event/trace_event_argument.h"
+
+#include <utility>
+
 #include "base/values.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 namespace trace_event {
 
 TEST(TraceEventArgumentTest, FlatDictionary) {
   scoped_refptr<TracedValue> value = new TracedValue();
   value->SetInteger("int", 2014);
   value->SetDouble("double", 0.0);
@@ skipping 83 matching lines @@
   dict_value->SetBoolean("bool", true);
   dict_value->SetInteger("int", 42);
   dict_value->SetDouble("double", 42.0f);
   dict_value->SetString("string", std::string("a") + "b");
   dict_value->SetString("string", std::string("a") + "b");
 
   auto list_value = make_scoped_ptr(new ListValue);
   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();
   list_value.reset();
 
   std::string json;
   value->AppendAsTraceFormat(&json);
   EXPECT_EQ(
       "{\"outer_dict\":{\"inner_list\":[false,1,\"in_list\",{\"bool\":true,"
       "\"double\":42.0,\"int\":42,\"string\":\"ab\"}]}}",
@@ skipping 26 matching lines @@
   nested_dict_value->SetInteger("f", 3);
   nested_dict_value->BeginDictionary("g");
   nested_dict_value->EndDictionary();
   json = "";
   nested_dict_value->AppendAsTraceFormat(&json);
   EXPECT_EQ("{\"b\":2,\"c\":[\"foo\"],\"f\":3,\"g\":{}}", json);
 }
 
 }  // namespace trace_event
 }  // namespace base