Remove raw DictionaryValue::Set in //chrome

chrome/test/chromedriver/commands_unittest.cc

 // Copyright (c) 2012 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/commands.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <string>
@@ skipping 55 matching lines @@
   if (*count == 0) {
     EXPECT_STREQ("id", session_id.c_str());
   } else {
     EXPECT_STREQ("id2", session_id.c_str());
   }
   (*count)++;
 
   std::unique_ptr<base::DictionaryValue> capabilities(
       new base::DictionaryValue());
 
-  capabilities->Set("capability1", new base::Value("test1"));
-  capabilities->Set("capability2", new base::Value("test2"));
+  capabilities->SetString("capability1", "test1");
+  capabilities->SetString("capability2", "test2");
 
   callback.Run(Status(kOk), std::move(capabilities), session_id, false);
 }
 
 void OnGetSessions(const Status& status,
                    std::unique_ptr<base::Value> value,
                    const std::string& session_id,
                    bool w3c_compliant) {
   ASSERT_EQ(kOk, status.code());
   ASSERT_TRUE(value.get());
@@ skipping 745 matching lines @@
       cmd,
       false,
       params,
       id,
       base::Bind(&OnFailBecauseErrorNotifyingListeners, &run_loop));
   run_loop.Run();
 
   thread->task_runner()->PostTask(FROM_HERE,
                                   base::Bind(&VerifySessionWasDeleted));
 }