Last patch in removing MessageLoop* caching.

chrome/browser/download/download_request_manager.h

Index: chrome/browser/download/download_request_manager.h
===================================================================
--- chrome/browser/download/download_request_manager.h	(revision 30863)
+++ chrome/browser/download/download_request_manager.h	(working copy)
@@ -14,7 +14,6 @@
 #include "chrome/common/notification_registrar.h"
 
 class DownloadRequestInfoBarDelegate;
-class MessageLoop;
 class NavigationController;
 class TabContents;
 
@@ -148,7 +147,7 @@
     DISALLOW_COPY_AND_ASSIGN(TabDownloadState);
   };
 
-  DownloadRequestManager(MessageLoop* io_loop, MessageLoop* ui_loop);
+  DownloadRequestManager();
   ~DownloadRequestManager();
 
   // Returns the download status for a page. This does not change the state in
@@ -215,11 +214,6 @@
   // ALLOW_ONE_DOWNLOAD.
   void Remove(TabDownloadState* state);
 
-  // Two threads we use. NULL during testing, in which case messages are
-  // dispatched immediately.
-  MessageLoop* io_loop_;
-  MessageLoop* ui_loop_;
-
   // Maps from tab to download state. The download state for a tab only exists
   // if the state is other than ALLOW_ONE_DOWNLOAD. Similarly once the state
   // transitions from anything but ALLOW_ONE_DOWNLOAD back to ALLOW_ONE_DOWNLOAD