Revert 137540 - Disable off-store extension installs by default. Also get rid of ExtensionService::…

chrome/browser/download/download_crx_util.cc

 // Copyright (c) 2012 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.
 //
 // Download code which handles CRX files (extensions, themes, apps, ...).
 
 #include "chrome/browser/download/download_util.h"
 #include "chrome/browser/extensions/crx_installer.h"
 #include "chrome/browser/extensions/extension_install_ui.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 33 matching lines @@
 }
 
 }  // namespace
 
 // Tests can call this method to inject a mock ExtensionInstallUI
 // to be used to confirm permissions on a downloaded CRX.
 void SetMockInstallUIForTesting(ExtensionInstallUI* mock_ui) {
   mock_install_ui_for_testing = mock_ui;
 }
 
+bool ShouldOpenExtensionDownload(const DownloadItem& download_item) {
+  if (extensions::switch_utils::IsOffStoreInstallEnabled() ||
+      WebstoreInstaller::GetAssociatedApproval(download_item)) {
+    return true;
+  } else {
+    return false;
+  }
+}
+
 scoped_refptr<CrxInstaller> OpenChromeExtension(
     Profile* profile,
     const DownloadItem& download_item) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   ExtensionService* service = profile->GetExtensionService();
   CHECK(service);
 
   scoped_refptr<CrxInstaller> installer(
       CrxInstaller::Create(
           service,
           CreateExtensionInstallUI(profile),
           WebstoreInstaller::GetAssociatedApproval(download_item)));
   installer->set_delete_source(true);
 
   if (UserScript::IsURLUserScript(download_item.GetURL(),
                                   download_item.GetMimeType())) {
     installer->InstallUserScript(download_item.GetFullPath(),
                                  download_item.GetURL());
   } else {
-    bool is_gallery_download =
-        WebstoreInstaller::GetAssociatedApproval(download_item) != NULL;
+    bool is_gallery_download = service->IsDownloadFromGallery(
+        download_item.GetURL(), download_item.GetReferrerUrl());
     installer->set_original_mime_type(download_item.GetOriginalMimeType());
     installer->set_apps_require_extension_mime_type(true);
     installer->set_download_url(download_item.GetURL());
     installer->set_is_gallery_install(is_gallery_download);
     if (is_gallery_download)
       installer->set_original_download_url(download_item.GetOriginalUrl());
     installer->set_allow_silent_install(is_gallery_download);
     installer->set_install_cause(extension_misc::INSTALL_CAUSE_USER_DOWNLOAD);
     installer->InstallCrx(download_item.GetFullPath());
   }
 
   return installer;
 }
 
 }  // namespace download_crx_util