Don't show downloads from web intents picker in shelf

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 1e753cadc23babde67b4b7c46e228b8c5429d844..3c7622f5755e96323baf15a9195cd7a14a836527 100644
--- a/chrome/browser/ui/intents/web_intent_picker_controller.cc
+++ b/chrome/browser/ui/intents/web_intent_picker_controller.cc
@@ -12,6 +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/extensions/extension_service.h"
 #include "chrome/browser/extensions/platform_app_launcher.h"
 #include "chrome/browser/extensions/webstore_installer.h"
@@ -543,6 +544,7 @@ void WebIntentPickerController::OnClosing() {
 void WebIntentPickerController::OnExtensionDownloadStarted(
     const std::string& id,
     content::DownloadItem* item) {
+  download_util::SetShouldShowInShelf(item, false);
   download_id_ = item->GetGlobalId();
   picker_model_->UpdateExtensionDownloadState(item);
 }