webui: Request favicons at all required display scale factors

chrome/browser/favicon/favicon_service.cc

Index: chrome/browser/favicon/favicon_service.cc
diff --git a/chrome/browser/favicon/favicon_service.cc b/chrome/browser/favicon/favicon_service.cc
index ad4a79dfbd1672fc657b7b593a2010a763161e06..b1f50874d601ae54aba44d1dcc92d38111b8caf0 100644
--- a/chrome/browser/favicon/favicon_service.cc
+++ b/chrome/browser/favicon/favicon_service.cc
@@ -211,9 +211,8 @@ FaviconService::Handle FaviconService::GetFaviconForURLImpl(
   FaviconService::Handle handle = request->handle();
   if (page_url.SchemeIs(chrome::kChromeUIScheme) ||
       page_url.SchemeIs(chrome::kExtensionScheme)) {
-    // TODO(pkotwicz): Pass in desired size and desired scale factors.
     ChromeWebUIControllerFactory::GetInstance()->GetFaviconForURL(
-        profile, request, page_url);
+        profile, request, page_url, desired_scale_factors);
   } else {
     // TODO(pkotwicz): Pass in desired size and desired scale factors.
     if (history_service_)