MD Downloads: gzip vulcanized resources via compress="gzip"

chrome/browser/ui/webui/md_downloads/md_downloads_ui.cc

Index: chrome/browser/ui/webui/md_downloads/md_downloads_ui.cc
diff --git a/chrome/browser/ui/webui/md_downloads/md_downloads_ui.cc b/chrome/browser/ui/webui/md_downloads/md_downloads_ui.cc
index 99404cb1219d98bb2389f6a1e16c077354263f3e..c70dd2d1c9f7959047f14f4084ee315950ef0ec1 100644
--- a/chrome/browser/ui/webui/md_downloads/md_downloads_ui.cc
+++ b/chrome/browser/ui/webui/md_downloads/md_downloads_ui.cc
@@ -105,6 +105,13 @@ content::WebUIDataSource* CreateDownloadsUIHTMLSource(Profile* profile) {
                           IDR_MD_DOWNLOADS_2X_NO_DOWNLOADS_PNG);
 
 #if BUILDFLAG(USE_VULCANIZE)
+  std::unordered_set<std::string> exclude_from_gzip;
+  exclude_from_gzip.insert("1x/incognito_marker.png");
+  exclude_from_gzip.insert("2x/incognito_marker.png");
+  exclude_from_gzip.insert("1x/no_downloads.png");
+  exclude_from_gzip.insert("2x/no_downloads.png");
+  source->UseGzip(exclude_from_gzip);
+
   source->AddResourcePath("crisper.js", IDR_MD_DOWNLOADS_CRISPER_JS);
   source->SetDefaultResource(IDR_MD_DOWNLOADS_VULCANIZED_HTML);
 #else