Refactor downloads into a ProfileKeyedService.

chrome/browser/download/chrome_download_manager_delegate.h

Index: chrome/browser/download/chrome_download_manager_delegate.h
diff --git a/chrome/browser/download/chrome_download_manager_delegate.h b/chrome/browser/download/chrome_download_manager_delegate.h
index b006e5396ded660c75780eb53b606a3a6991eff0..586d12415a4f6cfe1d68504c26ab8ce131f4ca2b 100644
--- a/chrome/browser/download/chrome_download_manager_delegate.h
+++ b/chrome/browser/download/chrome_download_manager_delegate.h
@@ -47,8 +47,6 @@ class ChromeDownloadManagerDelegate
   // Returns true if the given item is for an extension download.
   static bool IsExtensionDownload(const DownloadItem* item);
 
-  void SetDownloadManager(DownloadManager* dm);
-
   virtual void Shutdown() OVERRIDE;
   virtual bool ShouldStartDownload(int32 download_id) OVERRIDE;
   virtual void ChooseDownloadPath(TabContents* tab_contents,
@@ -79,6 +77,7 @@ class ChromeDownloadManagerDelegate
                               const FilePath& suggested_path,
                               bool can_save_as_complete) OVERRIDE;
   virtual void DownloadProgressUpdated() OVERRIDE;
+  virtual void SetDownloadManager(DownloadManager* dm) OVERRIDE;
 
   DownloadPrefs* download_prefs() { return download_prefs_.get(); }
   DownloadHistory* download_history() { return download_history_.get(); }