Use IPC to wait for download in DownloadTest.

chrome/browser/browser.cc

 // Copyright (c) 2010 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/browser.h"
 
 #if defined(OS_WIN)
 #include <shellapi.h>
 #include <windows.h>
 #endif  // OS_WIN
@@ skipping 2579 matching lines @@
 
   if (source == GetSelectedTabContents()) {
     PrefService* prefs = profile_->GetPrefs();
     GetStatusBubble()->SetURL(url, prefs->GetString(prefs::kAcceptLanguages));
   }
 }
 
 void Browser::UpdateDownloadShelfVisibility(bool visible) {
   if (GetStatusBubble())
     GetStatusBubble()->UpdateDownloadShelfVisibility(visible);
+
+  NotificationService::current()->Notify(
+      NotificationType::DOWNLOAD_SHELF_VISIBILITY_CHANGED,
+      Source<Browser>(this),
+      NotificationService::NoDetails());
 }
 
 void Browser::ContentsZoomChange(bool zoom_in) {
   ExecuteCommand(zoom_in ? IDC_ZOOM_PLUS : IDC_ZOOM_MINUS);
 }
 
 void Browser::OnContentSettingsChange(TabContents* source) {
   if (source == GetSelectedTabContents())
     window_->GetLocationBar()->UpdateContentSettingsIcons();
 }
@@ skipping 1254 matching lines @@
 }
 
 bool Browser::IsPinned(TabContents* source) {
   int index = tabstrip_model_.GetIndexOfTabContents(source);
   if (index == TabStripModel::kNoTab) {
     NOTREACHED() << "IsPinned called for tab not in our strip";
     return false;
   }
   return tabstrip_model_.IsTabPinned(index);
 }