Use DownloadItemModel for storing chrome/ specific UI data for DownloadItems.

chrome/browser/ui/intents/web_intent_picker_controller.cc

Index: chrome/browser/ui/intents/web_intent_picker_controller.cc
diff --git a/chrome/browser/ui/intents/web_intent_picker_controller.cc b/chrome/browser/ui/intents/web_intent_picker_controller.cc
index a555ff1978f76c1fa2d9b96ed442065ee56cdfa3..e7eb5b93e816d167c5832575fafb48d9bb3a6425 100644
--- a/chrome/browser/ui/intents/web_intent_picker_controller.cc
+++ b/chrome/browser/ui/intents/web_intent_picker_controller.cc
@@ -12,7 +12,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
-#include "chrome/browser/download/download_util.h"
+#include "chrome/browser/download/download_item_model.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/extensions/platform_app_launcher.h"
@@ -478,7 +478,7 @@ void WebIntentPickerController::OnClosing() {
 void WebIntentPickerController::OnExtensionDownloadStarted(
     const std::string& id,
     content::DownloadItem* item) {
-  download_util::SetShouldShowInShelf(item, false);
+  DownloadItemModel(item).SetShouldShowInShelf(false);
   download_id_ = item->GetGlobalId();
   picker_model_->UpdateExtensionDownloadState(item);
 }