GTTF: Clean up DownloadFileManager

chrome/browser/download/download_file.h

Index: chrome/browser/download/download_file.h
diff --git a/chrome/browser/download/download_file.h b/chrome/browser/download/download_file.h
index ca188c97884005aa0b75e4c2c19a19469a788d7f..88c0715c48cf0a3b183f73b20b44eed0b4a65ce0 100644
--- a/chrome/browser/download/download_file.h
+++ b/chrome/browser/download/download_file.h
@@ -7,10 +7,12 @@
 #pragma once
 
 #include "base/basictypes.h"
+#include "base/ref_counted.h"
 #include "chrome/browser/download/base_file.h"
 #include "chrome/browser/download/download_types.h"
 
 struct DownloadCreateInfo;
+class DownloadManager;
 class ResourceDispatcherHost;
 
 // These objects live exclusively on the download thread and handle the writing
@@ -19,7 +21,8 @@ class ResourceDispatcherHost;
 // cancelled, the DownloadFile is destroyed.
 class DownloadFile : public BaseFile {
  public:
-  explicit DownloadFile(const DownloadCreateInfo* info);
+  DownloadFile(const DownloadCreateInfo* info,
+               DownloadManager* download_manager);
   virtual ~DownloadFile();
 
   // Deletes its .crdownload intermediate file.
@@ -29,7 +32,10 @@ class DownloadFile : public BaseFile {
   // Cancels the download request associated with this file.
   void CancelDownloadRequest(ResourceDispatcherHost* rdh);
 
+  void OnDownloadManagerShutdown();
+
   int id() const { return id_; }
+  DownloadManager* GetDownloadManager();
 
  private:
   // The unique identifier for this download, assigned at creation by
@@ -42,6 +48,9 @@ class DownloadFile : public BaseFile {
   // Handle for informing the ResourceDispatcherHost of a UI based cancel.
   int request_id_;
 
+  // DownloadManager this download belongs to.
+  scoped_refptr<DownloadManager> download_manager_;
+
   DISALLOW_COPY_AND_ASSIGN(DownloadFile);
 };