[Password Generation] Use signatures for form matching

components/autofill/core/browser/autofill_download_manager.cc

 // Copyright 2014 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.
 
 #include "components/autofill/core/browser/autofill_download_manager.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/location.h"
@@ skipping 197 matching lines @@
   if (!upload.SerializeToString(&payload))
     return false;
 
   if (form.upload_required() == UPLOAD_NOT_REQUIRED) {
     VLOG(1) << "AutofillDownloadManager: Upload request is ignored.";
     // If we ever need notification that upload was skipped, add it here.
     return false;
   }
 
   FormRequestData request_data;
-  request_data.form_signatures.push_back(form.FormSignature());
+  request_data.form_signatures.push_back(form.FormSignatureAsStr());
   request_data.request_type = AutofillDownloadManager::REQUEST_UPLOAD;
   request_data.payload = payload;
 
   VLOG(1) << "Sending Autofill Upload Request:\n" << upload;
 
   return StartRequest(request_data);
 }
 
 bool AutofillDownloadManager::StartRequest(
     const FormRequestData& request_data) {
@@ skipping 117 matching lines @@
                                            it->second.second.form_signatures);
     } else {
       VLOG(1) << "AutofillDownloadManager: upload request has succeeded.";
       observer_->OnUploadedPossibleFieldTypes();
     }
   }
   url_fetchers_.erase(it);
 }
 
 }  // namespace autofill