Set datapresent string to contain precisely those field types available in stored Autofill data.

chrome/browser/autofill/autofill_manager.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_AUTOFILL_AUTOFILL_MANAGER_H_
 #define CHROME_BROWSER_AUTOFILL_AUTOFILL_MANAGER_H_
 #pragma once
 
 #include <list>
 #include <map>
@@ skipping 184 matching lines @@
   // Uses existing personal data to determine possible field types for the
   // |submitted_form|.
   void DeterminePossibleFieldTypesForUpload(FormStructure* submitted_form);
 
   // The personal data manager, used to save and load personal data to/from the
   // web database.  This is overridden by the AutofillManagerTest.
   // Weak reference.
   // May be NULL.  NULL indicates OTR.
   PersonalDataManager* personal_data_;
 
-  std::list<std::string> autofilled_forms_signatures_;
+  std::list<std::string> autofilled_form_signatures_;
   // Handles queries and uploads to Autofill servers.
   AutofillDownloadManager download_manager_;
 
   // Should be set to true in AutofillManagerTest and other tests, false in
   // AutofillDownloadManagerTest and in non-test environment. Is false by
   // default for the public constructor, and true by default for the test-only
   // constructors.
   bool disable_download_manager_requests_;
 
   // For logging UMA metrics. Overridden by metrics tests.
@@ skipping 36 matching lines @@
                            NoQualityMetricsForNonAutofillableForms);
   FRIEND_TEST_ALL_PREFIXES(AutofillMetricsTest, QualityMetrics);
   FRIEND_TEST_ALL_PREFIXES(AutofillMetricsTest, QualityMetricsForFailure);
   FRIEND_TEST_ALL_PREFIXES(AutofillMetricsTest, QualityMetricsWithExperimentId);
   FRIEND_TEST_ALL_PREFIXES(AutofillMetricsTest, SaneMetricsWithCacheMismatch);
 
   DISALLOW_COPY_AND_ASSIGN(AutofillManager);
 };
 
 #endif  // CHROME_BROWSER_AUTOFILL_AUTOFILL_MANAGER_H_