Download shelf autohides on showing in shell, just same as regular open

chrome/browser/download/download_item_model.cc

Index: chrome/browser/download/download_item_model.cc
diff --git a/chrome/browser/download/download_item_model.cc b/chrome/browser/download/download_item_model.cc
index 51ff68dd164c68d76a968a693b490020031937d6..fa77b223c41a2547325dd94323e9cec3d91b1983 100644
--- a/chrome/browser/download/download_item_model.cc
+++ b/chrome/browser/download/download_item_model.cc
@@ -70,6 +70,9 @@ class DownloadItemModelData : public base::SupportsUserData::Data {
   // Whether the download is currently being revived.
   bool is_being_revived_;
 
+  // Whether download was opened or shown in the shell.
+  bool opened_or_shown_;
+
  private:
   DownloadItemModelData();
   ~DownloadItemModelData() override {}
@@ -103,7 +106,8 @@ DownloadItemModelData::DownloadItemModelData()
       was_ui_notified_(false),
       should_prefer_opening_in_browser_(false),
       danger_level_(DownloadFileType::NOT_DANGEROUS),
-      is_being_revived_(false) {}
+      is_being_revived_(false),
+      opened_or_shown_(false) {}
 
 base::string16 InterruptReasonStatusMessage(
     content::DownloadInterruptReason reason) {
@@ -659,6 +663,16 @@ void DownloadItemModel::SetIsBeingRevived(bool is_being_revived) {
   data->is_being_revived_ = is_being_revived;
 }
 
+bool DownloadItemModel::GetOpenedOrShown() const {
+  const DownloadItemModelData* data = DownloadItemModelData::Get(download_);
+  return download_->GetOpened() || (data && data->opened_or_shown_);
+}
+
+void DownloadItemModel::SetOpenedOrShown(bool opened_or_shown) {
+  DownloadItemModelData* data = DownloadItemModelData::GetOrCreate(download_);
+  data->opened_or_shown_ = opened_or_shown;
+}
+
 base::string16 DownloadItemModel::GetProgressSizesString() const {
   base::string16 size_ratio;
   int64_t size = GetCompletedBytes();