Remove base::StringValue

tools/gn/command_desc.cc

 // Copyright (c) 2013 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 <stddef.h>
 
 #include <algorithm>
 #include <set>
 #include <sstream>
 
@@ skipping 67 matching lines @@
   if (value->GetAsString(&string_value)) {
     OutputString(name + ": ", DECORATION_YELLOW);
     OutputString(string_value + "\n");
   }
 }
 
 void VisibilityHandler(const std::string& name, const base::Value* value) {
   const base::ListValue* list;
   if (value->GetAsList(&list)) {
     if (list->empty()) {
-      base::StringValue str("(no visibility)");
+      base::Value str("(no visibility)");
       DefaultHandler(name, &str);
     } else {
       DefaultHandler(name, value);
     }
   }
 }
 
 void PublicHandler(const std::string& name, const base::Value* value) {
   std::string p;
   if (value->GetAsString(&p)) {
     if (p == "*") {
-      base::StringValue str("[All headers listed in the sources are public.]");
+      base::Value str("[All headers listed in the sources are public.]");
       DefaultHandler(name, &str);
       return;
     }
   }
   DefaultHandler(name, value);
 }
 
 void ConfigsHandler(const std::string& name, const base::Value* value) {
   bool tree = base::CommandLine::ForCurrentProcess()->HasSwitch(kTree);
   if (tree)
@@ skipping 389 matching lines @@
 
       if (!PrintConfig(config, what_to_print, !multiple_outputs))
         return 1;
     }
   }
 
   return 0;
 }
 
 }  // namespace commands