Move WasUnableToDownload logic to FaviconHandler

components/favicon/core/favicon_handler.h

Index: components/favicon/core/favicon_handler.h
diff --git a/components/favicon/core/favicon_handler.h b/components/favicon/core/favicon_handler.h
index e7a13bbb8d08a03166d910ab0330d170854c488b..b99d3975c8cfb524921b37181296e5b576951970 100644
--- a/components/favicon/core/favicon_handler.h
+++ b/components/favicon/core/favicon_handler.h
@@ -253,6 +253,11 @@ class FaviconHandler {
                   const gfx::Image& image,
                   favicon_base::IconType icon_type);
 
+  // Considers the current candidate finished and can (a) stop working if an
+  // exact match was found or no candidates are left; or (b) increase
+  // |current_candidate_index_| and start processing the next candidate.
+  void CurrentCandidateFinished(bool found_exact_match);
+
   // Notifies |driver_| that FaviconHandler found an icon which matches the
   // |handler_type_| criteria. NotifyFaviconUpdated() can be called multiple
   // times for the same page if: