[password autofill] Add serialization for FormData and FormFieldData

components/autofill/core/common/form_field_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_FIELD_DATA_H_
 #define COMPONENTS_AUTOFILL_CORE_COMMON_FORM_FIELD_DATA_H_
 
 #include <vector>
 
 #include "base/i18n/rtl.h"
 #include "base/strings/string16.h"
 
+class Pickle;
+class PickleIterator;
+
 namespace autofill {
 
 // Stores information about a field in a form.
 struct FormFieldData {
   FormFieldData();
   ~FormFieldData();
 
   // Equality tests for identity which does not include |value| or
   // |is_autofilled|.
   // TODO(dhollowa): These operators need to be revised when we implement field
@@ skipping 15 matching lines @@
   bool is_focusable;
   bool should_autocomplete;
   base::i18n::TextDirection text_direction;
 
   // For the HTML snippet |<option value="US">United States</option>|, the
   // value is "US" and the contents are "United States".
   std::vector<base::string16> option_values;
   std::vector<base::string16> option_contents;
 };
 
+// Serialize and deserialize FormFieldData. These are used when FormData objects
+// are serialized and deserialized.
+void SerializeFormFieldData(const FormFieldData& form_field_data,
+                            Pickle* serialized);
+bool DeserializeFormFieldData(PickleIterator* pickle_iterator,
+                              FormFieldData* form_field_data);
+
 // So we can compare FormFieldDatas with EXPECT_EQ().
 std::ostream& operator<<(std::ostream& os, const FormFieldData& field);
 
 // Prefer to use this macro in place of |EXPECT_EQ()| for comparing
 // |FormFieldData|s in test code.
 #define EXPECT_FORM_FIELD_DATA_EQUALS(expected, actual) \
   do { \
     EXPECT_EQ(expected.label, actual.label); \
     EXPECT_EQ(expected.name, actual.name); \
     EXPECT_EQ(expected.value, actual.value); \
     EXPECT_EQ(expected.form_control_type, actual.form_control_type); \
     EXPECT_EQ(expected.autocomplete_attribute, actual.autocomplete_attribute); \
     EXPECT_EQ(expected.max_length, actual.max_length); \
     EXPECT_EQ(expected.is_autofilled, actual.is_autofilled); \
     EXPECT_EQ(expected.is_checked, actual.is_checked); \
     EXPECT_EQ(expected.is_checkable, actual.is_checkable); \
   } while (0)
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CORE_COMMON_FORM_FIELD_DATA_H_
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