Remove snippet_id from ImageFetchedCallback

components/ntp_snippets/ntp_snippets_service.cc

Index: components/ntp_snippets/ntp_snippets_service.cc
diff --git a/components/ntp_snippets/ntp_snippets_service.cc b/components/ntp_snippets/ntp_snippets_service.cc
index 8ad028bfff07ccd17b6491ef1720c9b36327b1e9..59b67d650c5c2111081643db4f9997ac115f836c 100644
--- a/components/ntp_snippets/ntp_snippets_service.cc
+++ b/components/ntp_snippets/ntp_snippets_service.cc
@@ -695,7 +695,7 @@ void NTPSnippetsService::OnSnippetImageDecodedFromDatabase(
     const std::string& snippet_id,
     const gfx::Image& image) {
   if (!image.IsEmpty()) {
-    callback.Run(MakeUniqueID(provided_category_, snippet_id), image);
+    callback.Run(image);
     return;
   }
 
@@ -742,7 +742,7 @@ void NTPSnippetsService::OnSnippetImageDecodedFromNetwork(
     const ImageFetchedCallback& callback,
     const std::string& snippet_id,
     const gfx::Image& image) {
-  callback.Run(MakeUniqueID(provided_category_, snippet_id), image);
+  callback.Run(image);
 }
 
 void NTPSnippetsService::EnterStateEnabled(bool fetch_snippets) {