Switch various ValueTypeToString()s to base::Value::GetTypeName().

components/prefs/pref_value_map.cc

 // Copyright (c) 2011 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 "components/prefs/pref_value_map.h"
 
 #include <map>
 #include <memory>
 #include <utility>
 
@@ skipping 56 matching lines @@
 }
 
 PrefValueMap::const_iterator PrefValueMap::begin() const {
   return prefs_.begin();
 }
 
 PrefValueMap::const_iterator PrefValueMap::end() const {
   return prefs_.end();
 }
 
+bool PrefValueMap::empty() const {
+  return prefs_.empty();
+}
+
 bool PrefValueMap::GetBoolean(const std::string& key,
                               bool* value) const {
   const base::Value* stored_value = nullptr;
   return GetValue(key, &stored_value) && stored_value->GetAsBoolean(value);
 }
 
 void PrefValueMap::SetBoolean(const std::string& key, bool value) {
-  SetValue(key, base::WrapUnique(new base::FundamentalValue(value)));
+  SetValue(key, base::MakeUnique<base::FundamentalValue>(value));
 }
 
 bool PrefValueMap::GetString(const std::string& key,
                              std::string* value) const {
   const base::Value* stored_value = nullptr;
   return GetValue(key, &stored_value) && stored_value->GetAsString(value);
 }
 
 void PrefValueMap::SetString(const std::string& key,
                              const std::string& value) {
-  SetValue(key, base::WrapUnique(new base::StringValue(value)));
+  SetValue(key, base::MakeUnique<base::StringValue>(value));
 }
 
 bool PrefValueMap::GetInteger(const std::string& key, int* value) const {
   const base::Value* stored_value = nullptr;
   return GetValue(key, &stored_value) && stored_value->GetAsInteger(value);
 }
 
 void PrefValueMap::SetInteger(const std::string& key, const int value) {
-  SetValue(key, base::WrapUnique(new base::FundamentalValue(value)));
+  SetValue(key, base::MakeUnique<base::FundamentalValue>(value));
 }
 
 void PrefValueMap::SetDouble(const std::string& key, const double value) {
-  SetValue(key, base::WrapUnique(new base::FundamentalValue(value)));
+  SetValue(key, base::MakeUnique<base::FundamentalValue>(value));
 }
 
 void PrefValueMap::GetDifferingKeys(
     const PrefValueMap* other,
     std::vector<std::string>* differing_keys) const {
   differing_keys->clear();
 
   // Put everything into ordered maps.
   std::map<std::string, base::Value*> this_prefs(prefs_.begin(), prefs_.end());
   std::map<std::string, base::Value*> other_prefs(other->prefs_.begin(),
@@ skipping 17 matching lines @@
       ++other_pref;
     }
   }
 
   // Add the remaining entries.
   for ( ; this_pref != this_prefs.end(); ++this_pref)
       differing_keys->push_back(this_pref->first);
   for ( ; other_pref != other_prefs.end(); ++other_pref)
       differing_keys->push_back(other_pref->first);
 }