Don't send the body of the redirected request to the ServiceWorker.

content/browser/service_worker/service_worker_url_request_job.cc

Index: content/browser/service_worker/service_worker_url_request_job.cc
diff --git a/content/browser/service_worker/service_worker_url_request_job.cc b/content/browser/service_worker/service_worker_url_request_job.cc
index 44fab7f581af4ebfec85d300efe60def2206de1e..8faed6e7a2065e6802ef9a9cb02ea255cd34ca67 100644
--- a/content/browser/service_worker/service_worker_url_request_job.cc
+++ b/content/browser/service_worker/service_worker_url_request_job.cc
@@ -446,7 +446,9 @@ scoped_ptr<ServiceWorkerFetchRequest>
 ServiceWorkerURLRequestJob::CreateFetchRequest() {
   std::string blob_uuid;
   uint64_t blob_size = 0;
-  CreateRequestBodyBlob(&blob_uuid, &blob_size);
+  // The upload data in URLRequest may have been cleared while handing redirect.
+  if (request_->has_upload())
+    CreateRequestBodyBlob(&blob_uuid, &blob_size);
   scoped_ptr<ServiceWorkerFetchRequest> request(
       new ServiceWorkerFetchRequest());
   request->mode = request_mode_;