Disable download for overlay panel content

content/browser/renderer_host/render_view_host_impl.cc

Index: content/browser/renderer_host/render_view_host_impl.cc
diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
index 0afaa9b99014b559a74ed6bc41213f76cf37b4e4..d782ebeb9721680ac016e8f8c2c814b05dc723be 100644
--- a/content/browser/renderer_host/render_view_host_impl.cc
+++ b/content/browser/renderer_host/render_view_host_impl.cc
@@ -565,6 +565,9 @@ WebPreferences RenderViewHostImpl::ComputeWebkitPrefs() {
   prefs.user_gesture_required_for_presentation = !command_line.HasSwitch(
       switches::kDisableGestureRequirementForPresentation);
 
+  if (delegate_ && delegate_->HideDownloadUI())
+    prefs.hide_download_ui = true;
+
   GetContentClient()->browser()->OverrideWebkitPrefs(this, &prefs);
   return prefs;
 }