Run clang-modernize -use-nullptr over src/extensions/.

extensions/browser/api/declarative/declarative_api.cc

Index: extensions/browser/api/declarative/declarative_api.cc
diff --git a/extensions/browser/api/declarative/declarative_api.cc b/extensions/browser/api/declarative/declarative_api.cc
index e9b355d950d2c9892ef69ee25e840b9ac56fcc4e..16b83eda8e765b555025f11c716da24309013903 100644
--- a/extensions/browser/api/declarative/declarative_api.cc
+++ b/extensions/browser/api/declarative/declarative_api.cc
@@ -72,7 +72,7 @@ void ConvertBinaryListElementsToBase64(base::ListValue* args) {
   for (base::ListValue::iterator iter = args->begin(); iter != args->end();
        ++iter, ++index) {
     if ((*iter)->IsType(base::Value::TYPE_BINARY)) {
-      base::BinaryValue* binary = NULL;
+      base::BinaryValue* binary = nullptr;
       if (args->GetBinary(index, &binary))
         args->Set(index, ConvertBinaryToBase64(binary).release());
     } else if ((*iter)->IsType(base::Value::TYPE_LIST)) {
@@ -94,7 +94,7 @@ void ConvertBinaryDictionaryValuesToBase64(base::DictionaryValue* dict) {
   for (base::DictionaryValue::Iterator iter(*dict); !iter.IsAtEnd();
        iter.Advance()) {
     if (iter.value().IsType(base::Value::TYPE_BINARY)) {
-      base::BinaryValue* binary = NULL;
+      base::BinaryValue* binary = nullptr;
       if (dict->GetBinary(iter.key(), &binary))
         dict->Set(iter.key(), ConvertBinaryToBase64(binary).release());
     } else if (iter.value().IsType(base::Value::TYPE_LIST)) {
@@ -112,8 +112,7 @@ void ConvertBinaryDictionaryValuesToBase64(base::DictionaryValue* dict) {
 
 }  // namespace
 
-RulesFunction::RulesFunction()
-    : rules_registry_(NULL) {
+RulesFunction::RulesFunction() : rules_registry_(nullptr) {
 }
 
 RulesFunction::~RulesFunction() {}