Convert //extensions/browser from scoped_ptr to std::unique_ptr

extensions/browser/value_store/value_store.cc

Index: extensions/browser/value_store/value_store.cc
diff --git a/extensions/browser/value_store/value_store.cc b/extensions/browser/value_store/value_store.cc
index c198f1055661cfe84d20a628dcf7c4c93e30dea1..aa1588b7eabe67f2b1e2df339ca5a16aa318370c 100644
--- a/extensions/browser/value_store/value_store.cc
+++ b/extensions/browser/value_store/value_store.cc
@@ -34,7 +34,7 @@ void ValueStore::Status::Merge(const Status& status) {
 // Implementation of ReadResultType.
 
 ValueStore::ReadResultType::ReadResultType(
-    scoped_ptr<base::DictionaryValue> settings,
+    std::unique_ptr<base::DictionaryValue> settings,
     const Status& status)
     : settings_(std::move(settings)), status_(status) {
   CHECK(settings_);
@@ -48,7 +48,7 @@ ValueStore::ReadResultType::~ReadResultType() {}
 // Implementation of WriteResultType.
 
 ValueStore::WriteResultType::WriteResultType(
-    scoped_ptr<ValueStoreChangeList> changes,
+    std::unique_ptr<ValueStoreChangeList> changes,
     const Status& status)
     : changes_(std::move(changes)), status_(status) {
   CHECK(changes_);