Use content::Referrer to pass around referrers in the plugin code

content/child/npapi/plugin_url_fetcher.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_CHILD_NPAPI_URL_FETCHER_H_
 #define CONTENT_CHILD_NPAPI_URL_FETCHER_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "content/public/child/request_peer.h"
+#include "content/public/common/referrer.h"
 #include "url/gurl.h"
 
 namespace content {
 class MultipartResponseDelegate;
 class PluginStreamUrl;
 class ResourceLoaderBridge;
 
 // Fetches URLS for a plugin using ResourceDispatcher.
 class PluginURLFetcher : public RequestPeer {
  public:
   PluginURLFetcher(PluginStreamUrl* plugin_stream,
                    const GURL& url,
                    const GURL& first_party_for_cookies,
                    const std::string& method,
                    const char* buf,
                    unsigned int len,
-                   const GURL& referrer,
+                   const Referrer& referrer,
                    const std::string& range,
                    bool notify_redirects,
                    bool is_plugin_src_load,
                    int origin_pid,
                    int render_frame_id,
                    int render_view_id,
                    unsigned long resource_id,
                    bool copy_stream_data);
   ~PluginURLFetcher() override;
 
   // Cancels the current request.
   void Cancel();
 
   // Called with the plugin's reply to NPP_URLRedirectNotify.
   void URLRedirectResponse(bool allow);
 
   GURL first_party_for_cookies() { return first_party_for_cookies_; }
-  GURL referrer() { return referrer_; }
+  Referrer referrer() { return referrer_; }
   int origin_pid() { return origin_pid_; }
   int render_frame_id() { return render_frame_id_; }
   int render_view_id() { return render_view_id_; }
   bool copy_stream_data() { return copy_stream_data_; }
   bool pending_failure_notification() { return pending_failure_notification_; }
 
  private:
   // RequestPeer implementation:
   void OnUploadProgress(uint64 position, uint64 size) override;
   bool OnReceivedRedirect(const net::RedirectInfo& redirect_info,
                           const ResourceResponseInfo& info) override;
   void OnReceivedResponse(const ResourceResponseInfo& info) override;
   void OnDownloadedData(int len, int encoded_data_length) override;
   void OnReceivedData(const char* data,
                       int data_length,
                       int encoded_data_length) override;
   void OnCompletedRequest(int error_code,
                           bool was_ignored_by_handler,
                           bool stale_copy_in_cache,
                           const std::string& security_info,
                           const base::TimeTicks& completion_time,
                           int64 total_transfer_size) override;
 
   // |plugin_stream_| becomes NULL after Cancel() to ensure no further calls
   // |reach it.
   PluginStreamUrl* plugin_stream_;
   GURL url_;
   GURL first_party_for_cookies_;
-  GURL referrer_;
+  Referrer referrer_;
   bool notify_redirects_;
   bool is_plugin_src_load_;
   int origin_pid_;
   int render_frame_id_;
   int render_view_id_;
   unsigned long resource_id_;
   bool copy_stream_data_;
   int64 data_offset_;
   bool pending_failure_notification_;
 
   scoped_ptr<MultipartResponseDelegate> multipart_delegate_;
 
   scoped_ptr<ResourceLoaderBridge> bridge_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginURLFetcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_NPAPI_URL_FETCHER_H_