Change DownloadProcessHandle to be more of an encapsulated class.

chrome/browser/download/download_create_info.h

Index: chrome/browser/download/download_create_info.h
diff --git a/chrome/browser/download/download_create_info.h b/chrome/browser/download/download_create_info.h
index 5adeac266c37bf969f22ecdab810f74cebdad1b1..a9f5ec1776df7ceef767407a7909c5c18e7d596e 100644
--- a/chrome/browser/download/download_create_info.h
+++ b/chrome/browser/download/download_create_info.h
@@ -13,7 +13,7 @@
 #include "base/file_path.h"
 #include "base/time.h"
 #include "chrome/browser/download/download_file.h"
-#include "chrome/browser/download/download_process_handle.h"
+#include "chrome/browser/download/download_request_handle.h"
 #include "googleurl/src/gurl.h"
 
 // Used for informing the download manager of a new download, since we don't
@@ -71,9 +71,9 @@ struct DownloadCreateInfo {
   // True if the download was initiated by user action.
   bool has_user_gesture;
 
-  // The handle to the process information.  Used for operations outside the
-  // download system.
-  DownloadProcessHandle process_handle;
+  // The handle to the download request information.  Used for operations
+  // outside the download system.
+  DownloadRequestHandle request_handle;
 
   // The handle of the download in the history database.
   int64 db_handle;