Implement FormStructure and an initial method, EncodeUploadRequest. This als...

chrome/browser/autofill/autofill_field.cc

+// Copyright (c) 2009 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 "chrome/browser/autofill/autofill_field.h"
+
+#include "base/logging.h"
+#include "base/sha1.h"
+#include "base/string_util.h"
+#include "base/utf_string_conversions.h"
+
+namespace {
+
+static std::string Hash32Bit(const std::string& str) {
+  std::string hash_bin = base::SHA1HashString(str);
+  DCHECK(hash_bin.length() == 20);
+
+  uint32 hash32 = ((hash_bin[0] & 0xFF) << 24) |
+                  ((hash_bin[1] & 0xFF) << 16) |
+                  ((hash_bin[2] & 0xFF) << 8) |
+                   (hash_bin[3] & 0xFF);
+
+  return UintToString(hash32);
+}
+
+}  // namespace
+
+AutoFillField::AutoFillField(const webkit_glue::FormField& field)
+    : webkit_glue::FormField(field) {
+}
+
+std::string AutoFillField::FieldSignature() const {
+  std::string field_name = UTF16ToUTF8(name());
+  std::string type = UTF16ToUTF8(html_input_type());
+  std::string field_string = field_name + "&" + type;
+  return Hash32Bit(field_string);
+}