Move creation and ownership of DownloadManager from the embedder to content. This matches all the o…

content/public/browser/download_manager.h

 // 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.
 //
 // The DownloadManager object manages the process of downloading, including
 // updates to the history system and providing the information for displaying
 // the downloads view in the Destinations tab. There is one DownloadManager per
 // active browser context in Chrome.
 //
 // Download observers:
@@ skipping 42 matching lines @@
 
 class BrowserContext;
 class DownloadManagerDelegate;
 class DownloadQuery;
 class DownloadUrlParameters;
 
 // Browser's download manager: manages all downloads and destination view.
 class CONTENT_EXPORT DownloadManager
     : public base::RefCountedThreadSafe<DownloadManager> {
  public:
-  static DownloadManager* Create(
-      DownloadManagerDelegate* delegate,
-      net::NetLog* net_log);
-
   // A method that can be used in tests to ensure that all the internal download
   // classes have no pending downloads.
   static bool EnsureNoPendingDownloadsForTesting();
 
+  virtual void SetDelegate(DownloadManagerDelegate* delegate) = 0;
+
   // Shutdown the download manager. Must be called before destruction.
   virtual void Shutdown() = 0;
 
   // Interface to implement for observers that wish to be informed of changes
   // to the DownloadManager's collection of downloads.
   class CONTENT_EXPORT Observer {
    public:
     // New or deleted download, observers should query us for the current set
     // of downloads.
     virtual void ModelChanged(DownloadManager* manager) = 0;
@@ skipping 160 matching lines @@
  protected:
   virtual ~DownloadManager() {}
 
  private:
   friend class base::RefCountedThreadSafe<DownloadManager>;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_DOWNLOAD_MANAGER_H_