Permissions: browser/ side implementation of multiple permissions request.

chrome/browser/permissions/permission_request_id.h

 // Copyright 2015 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 CHROME_BROWSER_PERMISSIONS_PERMISSION_REQUEST_ID_H_
 #define CHROME_BROWSER_PERMISSIONS_PERMISSION_REQUEST_ID_H_
 
 #include <string>
 
 #include "url/gurl.h"
 
+namespace content {
+class RenderFrameHost;
+}  // namespace content
+
 // Uniquely identifies a particular permission request.
 // None of the different attributes (render_process_id, render_frame_id or
 // request_id) is enough to compare two requests. In order to check if
 // a request is the same as another one, consumers of this class should use
 // the operator== or operator!=.
 class PermissionRequestID {
  public:
+  PermissionRequestID(content::RenderFrameHost* render_frame_host,
+                      int request_id);
   PermissionRequestID(int render_process_id,
                       int render_frame_id,
                       int request_id);
   ~PermissionRequestID();
 
   PermissionRequestID(const PermissionRequestID&) = default;
   PermissionRequestID& operator=(const PermissionRequestID&) = default;
 
   int render_process_id() const { return render_process_id_; }
   int render_frame_id() const { return render_frame_id_; }
   int request_id() const { return request_id_; }
 
   bool operator==(const PermissionRequestID& other) const;
   bool operator!=(const PermissionRequestID& other) const;
 
   std::string ToString() const;
 
  private:
   int render_process_id_;
   int render_frame_id_;
   int request_id_;
 };
 
 #endif  // CHROME_BROWSER_PERMISSIONS_PERMISSION_REQUEST_ID_H_