Reporting: Wrap existing classes in context.

net/reporting/reporting_header_parser.h

 // Copyright 2017 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 NET_REPORTING_REPORTING_HEADER_PARSER_H_
 #define NET_REPORTING_REPORTING_HEADER_PARSER_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "net/base/net_export.h"
 
 class GURL;
 
 namespace base {
 class Value;
 }  // namespace base
 
 namespace net {
 
 class ReportingCache;
+class ReportingContext;
 
-// Parses Report-To headers and writes the endpoint configurations to the
-// ReportingCache.
 class NET_EXPORT ReportingHeaderParser {
  public:
-  // Parses the normalized Report-To header value |json_value| sent in response
-  // to a request for |url| at |now|, and applies the endpoint configurations
-  // to |cache|.
-  static void ParseHeader(ReportingCache* cache,
-                          base::TimeTicks now,
+  static void ParseHeader(ReportingContext* context,
                           const GURL& url,
                           const std::string& json_value);
 
  private:
   // Processes a single endpoint's parsed value from the Report-To header(s).
   // Creates, updates, or removes a client in the cache as needed.
   //
   // |url| is the URL that the header came from.
   //
   // |value| is the parsed value.
   static void ProcessEndpoint(ReportingCache* cache,
                               base::TimeTicks now,
                               const GURL& url,
                               const base::Value& value);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(ReportingHeaderParser);
 };
 
 }  // namespace net
 
 #endif  // NET_REPORTING_REPORTING_HEADER_PARSER_H_