Chrome changes to support cached form submissions....

webkit/glue/resource_handle_impl.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // This file replaces WebCore/platform/network/win/ResourceHandleWin.cpp with a
 // platform-neutral implementation that simply defers almost entirely to
 // ResouceLoaderBridge.
 //
 // This uses the same ResourceHandle.h header file that the rest of WebKit
 // uses, allowing us to avoid complicated changes. Our specific things are
@@ skipping 433 matching lines @@
           // WebKit sometimes gives up empty data to append. These aren't
           // necessary so we just optimize those out here.
           bridge_->AppendDataToUpload(e.m_data.data(),
                                       static_cast<int>(e.m_data.size()));
         }
       } else {
         bridge_->AppendFileToUpload(
             webkit_glue::StringToStdWString(e.m_filename));
       }
     }
+    bridge_->SetUploadIdentifier(request_.httpBody()->identifier());
   }
 
   if (sync_load_response) {
     bridge_->SyncLoad(sync_load_response);
     return true;
   }
 
   bool rv = bridge_->Start(this);
   if (rv) {
     pending_ = true;
@@ skipping 287 matching lines @@
   // if the request cannot be serviced from cache.  We force the 'DontLoad'
   // cache policy at this point to ensure that we never hit the network for
   // this request.
   //
   DCHECK(request.httpMethod() == "POST");
   request.setCachePolicy(ReturnCacheDataDontLoad);
   return true;
 }
 
 }  // namespace WebCore