Remove raw DictionaryValue::Set in //chrome

chrome/test/chromedriver/devtools_events_logger.cc

 // Copyright 2017 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 "chrome/test/chromedriver/devtools_events_logger.h"
 
 #include "base/json/json_writer.h"
+#include "base/memory/ptr_util.h"
+#include "base/values.h"
 #include "chrome/test/chromedriver/chrome/devtools_client.h"
 #include "chrome/test/chromedriver/chrome/devtools_client_impl.h"
 
 DevToolsEventsLogger::DevToolsEventsLogger(Log* log,
                                            const base::ListValue* prefs)
     : log_(log),
       prefs_(prefs) {}
 
 inline DevToolsEventsLogger::~DevToolsEventsLogger() {}
 
 Status DevToolsEventsLogger::OnConnected(DevToolsClient* client) {
   for (base::ListValue::const_iterator it = prefs_->begin();
        it != prefs_->end();
        ++it) {
     std::string event;
     it->GetAsString(&event);
     events_.insert(event);
   }
   return Status(kOk);
 }
 
 Status DevToolsEventsLogger::OnEvent(DevToolsClient* client,
                                      const std::string& method,
                                      const base::DictionaryValue& params) {
   std::unordered_set<std::string>::iterator it = events_.find(method);
   if (it != events_.end()) {
     base::DictionaryValue log_message_dict;
     log_message_dict.SetString("method", method);
-    log_message_dict.Set("params", params.DeepCopy());
+    log_message_dict.Set("params", base::MakeUnique<base::Value>(params));
     std::string log_message_json;
     base::JSONWriter::Write(log_message_dict, &log_message_json);
 
     log_->AddEntry(Log::kInfo, log_message_json);
   }
   return Status(kOk);
 }