permissions: handle request ids for permissions in permission manager

content/browser/permissions/permission_service_impl.h

 // Copyright 2014 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_BROWSER_PERMISSIONS_PERMISSION_SERVICE_IMPL_H_
 #define CONTENT_BROWSER_PERMISSIONS_PERMISSION_SERVICE_IMPL_H_
 
 #include "base/id_map.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 30 matching lines @@
  private:
   using PermissionStatusCallback = mojo::Callback<void(PermissionStatus)>;
   using PermissionsStatusCallback =
       mojo::Callback<void(mojo::Array<PermissionStatus>)>;
 
   struct PendingRequest {
     PendingRequest(PermissionType permission, const GURL& origin,
                    const PermissionStatusCallback& callback);
     ~PendingRequest();
 
+    // Request ID received from the PermissionManager.
+    int id;
     PermissionType permission;
     GURL origin;
     PermissionStatusCallback callback;
   };
   using RequestsMap = IDMap<PendingRequest, IDMapOwnPointer>;
 
   struct PendingSubscription {
     PendingSubscription(PermissionType permission, const GURL& origin,
                         const PermissionStatusCallback& callback);
     ~PendingSubscription();
@@ skipping 46 matching lines @@
   PermissionServiceContext* context_;
   mojo::Binding<PermissionService> binding_;
   base::WeakPtrFactory<PermissionServiceImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PermissionServiceImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_PERMISSIONS_PERMISSION_SERVICE_IMPL_H_