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

extensions/common/manifest_handlers/shared_module_info.cc

Index: extensions/common/manifest_handlers/shared_module_info.cc
diff --git a/extensions/common/manifest_handlers/shared_module_info.cc b/extensions/common/manifest_handlers/shared_module_info.cc
index 2f712fd23337a6347ee14b65063ba0ce91f06f3c..548146da4ffdb42f6a75ad51b13b440916ad5b20 100644
--- a/extensions/common/manifest_handlers/shared_module_info.cc
+++ b/extensions/common/manifest_handlers/shared_module_info.cc
@@ -136,18 +136,18 @@ bool SharedModuleInfo::Parse(const Extension* extension,
   }
 
   if (has_export) {
-    const base::DictionaryValue* export_value = NULL;
+    const base::DictionaryValue* export_value = nullptr;
     if (!extension->manifest()->GetDictionary(keys::kExport, &export_value)) {
       *error = base::ASCIIToUTF16(errors::kInvalidExport);
       return false;
     }
-    const base::ListValue* resources_list = NULL;
+    const base::ListValue* resources_list = nullptr;
     if (!export_value->GetList(keys::kResources, &resources_list)) {
       *error = base::ASCIIToUTF16(errors::kInvalidExportResources);
       return false;
     }
     if (export_value->HasKey(keys::kWhitelist)) {
-      const base::ListValue* whitelist = NULL;
+      const base::ListValue* whitelist = nullptr;
       if (!export_value->GetList(keys::kWhitelist, &whitelist)) {
         *error = base::ASCIIToUTF16(errors::kInvalidExportWhitelist);
         return false;
@@ -182,13 +182,13 @@ bool SharedModuleInfo::Parse(const Extension* extension,
   }
 
   if (has_import) {
-    const base::ListValue* import_list = NULL;
+    const base::ListValue* import_list = nullptr;
     if (!extension->manifest()->GetList(keys::kImport, &import_list)) {
       *error = base::ASCIIToUTF16(errors::kInvalidImport);
       return false;
     }
     for (size_t i = 0; i < import_list->GetSize(); ++i) {
-      const base::DictionaryValue* import_entry = NULL;
+      const base::DictionaryValue* import_entry = nullptr;
       if (!import_list->GetDictionary(i, &import_entry)) {
         *error = base::ASCIIToUTF16(errors::kInvalidImport);
         return false;