Add favicon and publisher name to snippet cards

components/ntp_snippets/switches.cc

Index: components/ntp_snippets/switches.cc
diff --git a/components/ntp_snippets/switches.cc b/components/ntp_snippets/switches.cc
index 4fdbf2bb9fa60428f84aa431400dd9e05777b3c5..ee5f979e112c1f0ca64f5fae739d8f273be98a6a 100644
--- a/components/ntp_snippets/switches.cc
+++ b/components/ntp_snippets/switches.cc
@@ -18,5 +18,9 @@ const char kFetchingIntervalFallbackSeconds[] =
 // suggestions.
 const char kDontRestrict[] = "ntp-snippets-dont-restrict";
 
+// If this flag is set, we will add downloaded snippets that are missing some
+// critical data to the list.
+const char kAddIncompleteSnippets[] = "ntp-snippets-add-incomplete";
+
 }  // namespace switches
 }  // namespace ntp_snippets