Using ResourceRequestBody as the type of HTTP body outside of //content.

content/common/page_state_serialization.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 CONTENT_COMMON_PAGE_STATE_SERIALIZATION_H_
 #define CONTENT_COMMON_PAGE_STATE_SERIALIZATION_H_
 
 #include <stdint.h>
 
+#include <string>
 #include <vector>
 
 #include "base/strings/nullable_string16.h"
 #include "build/build_config.h"
 #include "content/common/content_export.h"
 #include "content/common/resource_request_body_impl.h"
 #include "third_party/WebKit/public/platform/WebHTTPBody.h"
 #include "third_party/WebKit/public/platform/WebHistoryScrollRestorationType.h"
 #include "third_party/WebKit/public/platform/WebReferrerPolicy.h"
 #include "ui/gfx/geometry/point.h"
@@ skipping 50 matching lines @@
 CONTENT_EXPORT bool DecodePageState(const std::string& encoded,
                                     ExplodedPageState* exploded);
 CONTENT_EXPORT bool EncodePageState(const ExplodedPageState& exploded,
                                     std::string* encoded);
 
 #if defined(OS_ANDROID)
 CONTENT_EXPORT bool DecodePageStateWithDeviceScaleFactorForTesting(
     const std::string& encoded,
     float device_scale_factor,
     ExplodedPageState* exploded);
+
+// Converts results of EncodeResourceRequestBody (passed in as a pair of |data|
+// + |size|) back into a ResourceRequestBodyImpl.  Returns nullptr if the
+// decoding fails (e.g. if |data| is malformed).
+scoped_refptr<ResourceRequestBodyImpl> DecodeResourceRequestBody(
+    const char* data,
+    size_t size);
+
+// Encodes |resource_request_body| into |encoded|.
+std::string EncodeResourceRequestBody(
+    const ResourceRequestBodyImpl& resource_request_body);
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_PAGE_STATE_SERIALIZATION_H_