Make the UI an observer of downloads.

chrome/browser/download/chrome_download_manager_delegate.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.
 
 #include "chrome/browser/download/chrome_download_manager_delegate.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 21 matching lines @@
 #include "chrome/browser/extensions/api/downloads/downloads_api.h"
 #include "chrome/browser/extensions/crx_installer.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/history/history_service.h"
 #include "chrome/browser/history/history_service_factory.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/prefs/pref_registry_syncable.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/safe_browsing/safe_browsing_service.h"
-#include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/extensions/feature_switch.h"
 #include "chrome/common/extensions/user_script.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/download_item.h"
 #include "content/public/browser/download_manager.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "grit/generated_resources.h"
 #include "net/base/net_util.h"
 #include "ui/base/l10n/l10n_util.h"
 
-#if !defined(OS_ANDROID)
-#include "chrome/browser/ui/browser.h"
-#include "chrome/browser/ui/browser_finder.h"
-#endif
-
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/drive/drive_download_handler.h"
 #include "chrome/browser/chromeos/drive/drive_file_system_util.h"
 #include "chrome/browser/download/download_file_picker_chromeos.h"
 #include "chrome/browser/download/save_package_file_picker_chromeos.h"
 #endif
 
 using content::BrowserContext;
 using content::BrowserThread;
 using content::DownloadId;
@@ skipping 182 matching lines @@
   DownloadFilePicker* file_picker =
 #if defined(OS_CHROMEOS)
       new DownloadFilePickerChromeOS();
 #else
       new DownloadFilePicker();
 #endif
   file_picker->Init(download_manager_, item, suggested_path,
                     file_selected_callback);
 }
 
-WebContents* ChromeDownloadManagerDelegate::
-    GetAlternativeWebContentsToNotifyForDownload() {
-#if defined(OS_ANDROID)
-  // Android does not implement BrowserList or any other way to get an
-  // alternate web contents.
-  return NULL;
-#else
-  // Start the download in the last active browser. This is not ideal but better
-  // than fully hiding the download from the user.
-  Browser* last_active = chrome::FindLastActiveWithProfile(profile_,
-      chrome::GetActiveDesktop());
-  return last_active ? last_active->tab_strip_model()->GetActiveWebContents()
-                     : NULL;
-#endif
-}
-
 bool ChromeDownloadManagerDelegate::ShouldOpenFileBasedOnExtension(
     const base::FilePath& path) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   base::FilePath::StringType extension = path.Extension();
   if (extension.empty())
     return false;
   if (extensions::Extension::IsExtension(path))
     return false;
   DCHECK(extension[0] == base::FilePath::kExtensionSeparator);
   extension.erase(0, 1);
@@ skipping 610 matching lines @@
     // TODO(asanka): This logic is a hack. DownloadFilePicker should give us a
     //               directory to persist. Or perhaps, if the Drive path
     //               substitution logic is moved here, then we would have a
     //               persistable path after the DownloadFilePicker is done.
     if (disposition == DownloadItem::TARGET_DISPOSITION_PROMPT &&
         !download->IsTemporary())
       last_download_path_ = target_path.DirName();
   }
   callback.Run(target_path, disposition, danger_type, intermediate_path);
 }