downloads: prevent "Clear all" from removing in progress downloads

chrome/browser/ui/webui/downloads_dom_handler.cc

Index: chrome/browser/ui/webui/downloads_dom_handler.cc
diff --git a/chrome/browser/ui/webui/downloads_dom_handler.cc b/chrome/browser/ui/webui/downloads_dom_handler.cc
index 5ab35f113d923063dcddd69aa4d7f34c611bbe1d..0a990713c77d06cff304f3c906e164ece738101b 100644
--- a/chrome/browser/ui/webui/downloads_dom_handler.cc
+++ b/chrome/browser/ui/webui/downloads_dom_handler.cc
@@ -543,8 +543,10 @@ void DownloadsDOMHandler::RemoveDownloads(
     const std::vector<content::DownloadItem*>& to_remove) {
   std::set<uint32> ids;
   for (auto* download : to_remove) {
-    if (IsRemoved(*download))
+    if (IsRemoved(*download) ||
+        download->GetState() == content::DownloadItem::IN_PROGRESS) {
       continue;
+    }
 
     DownloadsDOMHandlerData::Create(download)->set_is_removed(true);
     ids.insert(download->GetId());