Replace the DownloadFileManager with direct ownership

content/browser/browser_context.cc

Index: content/browser/browser_context.cc
diff --git a/content/browser/browser_context.cc b/content/browser/browser_context.cc
index fbf5a00c46d7e8a32bbe79b1bba9d969cc317ebf..02fe1cdd5131f9bd1933419f35b84ef7ff5fcdcf 100644
--- a/content/browser/browser_context.cc
+++ b/content/browser/browser_context.cc
@@ -7,7 +7,6 @@
 #include "content/browser/appcache/chrome_appcache_service.h"
 #include "webkit/database/database_tracker.h"
 #include "content/browser/dom_storage/dom_storage_context_impl.h"
-#include "content/browser/download/download_file_manager.h"
 #include "content/browser/download/download_manager_impl.h"
 #include "content/browser/in_process_webkit/indexed_db_context_impl.h"
 #include "content/browser/renderer_host/resource_dispatcher_host_impl.h"
@@ -111,11 +110,8 @@ DownloadManager* BrowserContext::GetDownloadManager(
   if (!context->GetUserData(kDownloadManagerKeyName)) {
     ResourceDispatcherHostImpl* rdh = ResourceDispatcherHostImpl::Get();
     DCHECK(rdh);
-    DownloadFileManager* file_manager = rdh->download_file_manager();
-    DCHECK(file_manager);
     scoped_refptr<DownloadManager> download_manager =
         new DownloadManagerImpl(
-            file_manager,
             scoped_ptr<DownloadItemFactory>(),
             GetContentClient()->browser()->GetNetLog());