Do not show downloads panel for temporary downloads.

chrome/browser/ui/browser.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/browser.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #endif  // OS_WIN
@@ skipping 3710 matching lines @@
     TabContents* constrained_tab = constrained->tab_contents();
     constrained_tab->delegate()->OnStartDownload(constrained_tab, download);
     return;
   }
 
   if (!window())
     return;
 
   if (DisplayOldDownloadsUI()) {
 #if defined(OS_CHROMEOS) && !defined(USE_AURA)
-    // Don't show content browser for extension/theme downloads from gallery.
-    ExtensionService* service = profile_->GetExtensionService();
-    if (!ChromeDownloadManagerDelegate::IsExtensionDownload(download) ||
-        service == NULL ||
-        !service->IsDownloadFromGallery(download->GetURL(),
-                                        download->GetReferrerUrl())) {
-      // Open the Active Downloads ui for chromeos.
+    if (ActiveDownloadsUI::ShouldShowPopup(profile_, download))
       ActiveDownloadsUI::OpenPopup(profile_);
-    }
 #else
     // GetDownloadShelf creates the download shelf if it was not yet created.
     DownloadShelf* shelf = window()->GetDownloadShelf();
     shelf->AddDownload(new DownloadItemModel(download));
     // Don't show the animation for "Save file" downloads.
     // For non-theme extensions, we don't show the download animation.
     // Show animation in same window as the download shelf. Download shelf
     // may not be in the same window that initiated the download, e.g.
     // Panels.
     // Don't show the animation if the selected tab is not visible (i.e. the
@@ skipping 1603 matching lines @@
     window_->GetLocationBar()->ShowFirstRunBubble(bubble_type);
   } else {
     GlobalErrorService* service =
         GlobalErrorServiceFactory::GetForProfile(profile());
     GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
     if (error) {
       error->ShowBubbleView(this);
     }
   }
 }