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

content/browser/geofencing/geofencing_service.cc

Index: content/browser/geofencing/geofencing_service.cc
diff --git a/content/browser/geofencing/geofencing_service.cc b/content/browser/geofencing/geofencing_service.cc
index 9f429d55957c51db7c07fc217ac7b92c2c754ccb..a9f9dfebb42baf05dfc21ed579aed5f99a2ec2da 100644
--- a/content/browser/geofencing/geofencing_service.cc
+++ b/content/browser/geofencing/geofencing_service.cc
@@ -140,7 +140,7 @@ void GeofencingServiceImpl::UnregisterRegion(
 }
 
 void GeofencingServiceImpl::SetProviderForTesting(
-    scoped_ptr<GeofencingProvider> provider) {
+    std::unique_ptr<GeofencingProvider> provider) {
   DCHECK(!provider_.get());
   provider_ = std::move(provider);
 }