Added DownloadProcessHandle class.

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 815f643bc36d85c0c6a78655c420517f2662c380..d75b4710be09d9ae972620b4fc3198adcde1586c 100644
--- a/chrome/browser/download/download_file.h
+++ b/chrome/browser/download/download_file.h
@@ -11,6 +11,7 @@
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/download/base_file.h"
+#include "chrome/browser/download/download_process_handle.h"
 #include "chrome/browser/download/download_types.h"
 
 struct DownloadCreateInfo;
@@ -41,10 +42,7 @@ class DownloadFile : public BaseFile {
   int id_;
 
   // IDs for looking up the tab we are associated with.

[Randy Smith (Not in Mondays), 2011/05/05 20:25:34]

Modify comment to fit new regime.  Maybe "Handle for tab lookup and informing
the ResourceDispatcherHost of a cancel."?

[ahendrickson, 2011/05/06 16:16:50]

Updated.

-  int child_id_;
-
-  // Handle for informing the ResourceDispatcherHost of a UI based cancel.
-  int request_id_;
+  DownloadProcessHandle process_handle_;
 
   // DownloadManager this download belongs to.
   scoped_refptr<DownloadManager> download_manager_;