Convert //extensions/{common,shell} from scoped_ptr to std::unique_ptr

extensions/common/event_filtering_info.cc

Index: extensions/common/event_filtering_info.cc
diff --git a/extensions/common/event_filtering_info.cc b/extensions/common/event_filtering_info.cc
index a426e1bb98d6027f1ba4d80dcbb264870d9e0e5b..0f2c7230a2f07618d228104c2d69f1ca1ed0d487 100644
--- a/extensions/common/event_filtering_info.cc
+++ b/extensions/common/event_filtering_info.cc
@@ -44,11 +44,11 @@ void EventFilteringInfo::SetInstanceID(int instance_id) {
   has_instance_id_ = true;
 }
 
-scoped_ptr<base::Value> EventFilteringInfo::AsValue() const {
+std::unique_ptr<base::Value> EventFilteringInfo::AsValue() const {
   if (IsEmpty())
     return base::Value::CreateNullValue();
 
-  scoped_ptr<base::DictionaryValue> result(new base::DictionaryValue);
+  std::unique_ptr<base::DictionaryValue> result(new base::DictionaryValue);
   if (has_url_)
     result->SetString("url", url_.spec());