Require explicit selection of traits for LazyInstance

content/child/blob_storage/blob_transport_controller.h

Index: content/child/blob_storage/blob_transport_controller.h
diff --git a/content/child/blob_storage/blob_transport_controller.h b/content/child/blob_storage/blob_transport_controller.h
index a3065ec4bca02f0b7ae4c574b79f30e4d4703683..43a86064906df6f3dd09d2b04b4872587c8d4922 100644
--- a/content/child/blob_storage/blob_transport_controller.h
+++ b/content/child/blob_storage/blob_transport_controller.h
@@ -26,7 +26,7 @@
 
 namespace base {
 template <typename T>
-struct DefaultLazyInstanceTraits;
+struct LazyInstanceTraitsBase;
 class SingleThreadTaskRunner;
 class TaskRunner;
 }
@@ -100,7 +100,7 @@ class CONTENT_EXPORT BlobTransportController {
   void CancelAllBlobTransfers();
 
  private:
-  friend struct base::DefaultLazyInstanceTraits<BlobTransportController>;
+  friend struct base::LazyInstanceTraitsBase<BlobTransportController>;
   friend class BlobTransportControllerTest;
   FRIEND_TEST_ALL_PREFIXES(BlobTransportControllerTest, Descriptions);
   FRIEND_TEST_ALL_PREFIXES(BlobTransportControllerTest, Responses);