Re-implement PageState serialization without a Blink API dependency.

content/common/page_state_serialization.h

+// Copyright (c) 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 CONTENT_COMMON_PAGE_STATE_SERIALIZATION_H_
+#define CONTENT_COMMON_PAGE_STATE_SERIALIZATION_H_
+
+#include <vector>
+
+#include "base/nullable_string16.h"
+#include "content/common/content_export.h"
+#include "googleurl/src/gurl.h"
+#include "third_party/WebKit/public/platform/WebHTTPBody.h"
+#include "ui/gfx/point.h"
+
+namespace content {
+
+struct CONTENT_EXPORT ExplodedHttpBodyElement {
+  WebKit::WebHTTPBody::Element::Type type;
+  std::string data;
+  base::NullableString16 file_path;
+  GURL url;
+  int64 file_start;
+  int64 file_length;
+  double file_modification_time;
+
+  ExplodedHttpBodyElement();
+  ~ExplodedHttpBodyElement();
+};
+
+struct CONTENT_EXPORT ExplodedHttpBody {
+  base::NullableString16 http_content_type;
+  std::vector<ExplodedHttpBodyElement> elements;
+  int64 identifier;
+  bool contains_passwords;
+  bool is_null;
+
+  ExplodedHttpBody();
+  ~ExplodedHttpBody();
+};
+
+struct CONTENT_EXPORT ExplodedFrameState {
+  base::NullableString16 url_string;
+  base::NullableString16 original_url_string;
+  base::NullableString16 referrer;
+  base::NullableString16 target;
+  base::NullableString16 parent;
+  base::NullableString16 title;
+  base::NullableString16 alternate_title;
+  base::NullableString16 state_object;
+  std::vector<base::NullableString16> document_state;
+  gfx::Point scroll_offset;
+  int64 item_sequence_number;
+  int64 document_sequence_number;
+  int visit_count;
+  double visited_time;
+  double page_scale_factor;
+  bool is_target_item;
+  ExplodedHttpBody http_body;
+  std::vector<ExplodedFrameState> children;
+
+  ExplodedFrameState();
+  ~ExplodedFrameState();
+};
+
+struct CONTENT_EXPORT ExplodedPageState {
+  std::vector<base::NullableString16> referenced_files;
+  ExplodedFrameState top;
+
+  ExplodedPageState();
+  ~ExplodedPageState();
+};
+
+CONTENT_EXPORT bool DecodePageState(const std::string& encoded,
+                                    ExplodedPageState* exploded);
+CONTENT_EXPORT bool EncodePageState(const ExplodedPageState& exploded,
+                                    std::string* encoded);
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_PAGE_STATE_SERIALIZATION_H_