[password autofill] Add serialization for FormData and FormFieldData

components/autofill/core/common/form_data.h

 // Copyright 2013 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 COMPONENTS_AUTOFILL_CORE_COMMON_FORM_DATA_H__
 #define COMPONENTS_AUTOFILL_CORE_COMMON_FORM_DATA_H__
 
 #include <vector>
 
 #include "base/strings/string16.h"
@@ skipping 19 matching lines @@
   // The URL (minus query parameters) containing the form.
   GURL origin;
   // The action target of the form.
   GURL action;
   // true if this form was submitted by a user gesture and not javascript.
   bool user_submitted;
   // A vector of all the input fields in the form.
   std::vector<FormFieldData> fields;
 };
 
+// Serialize FormData. Used by the PasswordManager to persist FormData
+// pertaining to password forms. Serialized data is appended to |pickle|
+void SerializeFormData(const FormData& form_data, Pickle* pickle);
+// Deserialize FormData. This assumes that |iter| is currently pointing to
+// the part of a pickle created by SerializeFormData. Returns true on success.
+bool DeserializeFormData(PickleIterator* iter, FormData* form_data);
+
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CORE_COMMON_FORM_DATA_H__