Change URLRequest to use a ref-counted buffer for actual IO....

chrome/browser/download/download_file.cc

Index: chrome/browser/download/download_file.cc
===================================================================
--- chrome/browser/download/download_file.cc	(revision 8697)
+++ chrome/browser/download/download_file.cc	(working copy)
@@ -23,6 +23,7 @@
 #include "chrome/common/win_util.h"
 #include "chrome/common/win_safe_util.h"
 #include "googleurl/src/gurl.h"
+#include "net/base/io_buffer.h"
 #include "net/base/net_util.h"
 #include "net/url_request/url_request_context.h"
 
@@ -265,11 +266,11 @@
 
   DownloadFile* download = LookupDownload(id);
   for (size_t i = 0; i < contents.size(); ++i) {
-    char* data = contents[i].first;
+    net::IOBuffer* data = contents[i].first;
     const int data_len = contents[i].second;
     if (download)
-      download->AppendDataToFile(data, data_len);
-    delete [] data;
+      download->AppendDataToFile(data->data(), data_len);
+    data->Release();
   }
 
   if (download) {