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

extensions/common/features/base_feature_provider.cc

Index: extensions/common/features/base_feature_provider.cc
diff --git a/extensions/common/features/base_feature_provider.cc b/extensions/common/features/base_feature_provider.cc
index 97f87bedb34f278dc732cb4b1fb6fdf8ff09b888..9169634d860e1f5843a24b9614e2d8591cd37dd7 100644
--- a/extensions/common/features/base_feature_provider.cc
+++ b/extensions/common/features/base_feature_provider.cc
@@ -50,7 +50,7 @@ BaseFeatureProvider::BaseFeatureProvider(const base::DictionaryValue& root,
         std::string parent_name = JoinString(split, '.');
         split.pop_back();
         if (root.HasKey(parent_name)) {
-          const base::DictionaryValue* parent = NULL;
+          const base::DictionaryValue* parent = nullptr;
           CHECK(root.GetDictionaryWithoutPathExpansion(parent_name, &parent));
           parse_stack.push(std::make_pair(parent_name, parent));
           bool no_parent = false;
@@ -135,18 +135,18 @@ Feature* BaseFeatureProvider::GetFeature(const std::string& name) const {
   if (iter != features_.end())
     return iter->second.get();
   else
-    return NULL;
+    return nullptr;
 }
 
 Feature* BaseFeatureProvider::GetParent(Feature* feature) const {
   CHECK(feature);
   if (feature->no_parent())
-    return NULL;
+    return nullptr;
 
   std::vector<std::string> split;
   base::SplitString(feature->name(), '.', &split);
   if (split.size() < 2)
-    return NULL;
+    return nullptr;
   split.pop_back();
   return GetFeature(JoinString(split, '.'));
 }