Don't prompt to save malicious downloads on exit

content/browser/download/download_manager_impl.cc

Index: content/browser/download/download_manager_impl.cc
diff --git a/content/browser/download/download_manager_impl.cc b/content/browser/download/download_manager_impl.cc
index ad60f8660ed428fb6114bd023e8d91601c4f13d9..33005197ff71441f0716421128345704a560a003 100644
--- a/content/browser/download/download_manager_impl.cc
+++ b/content/browser/download/download_manager_impl.cc
@@ -673,6 +673,18 @@ int DownloadManagerImpl::InProgressCount() const {
   return count;
 }
 
+int DownloadManagerImpl::NonDangerousInProgressCount() const {
+  int count = 0;
+  for (DownloadMap::const_iterator it = downloads_.begin();
+       it != downloads_.end(); ++it) {
+    if ((it->second->GetState() == DownloadItem::IN_PROGRESS) &&
+        !it->second->IsDangerous()) {
+      ++count;
+    }
+  }
+  return count;
+}
+
 DownloadItem* DownloadManagerImpl::GetDownload(uint32 download_id) {
   return ContainsKey(downloads_, download_id) ? downloads_[download_id] : NULL;
 }