Implement DelegationTracker for tracking delegated permissions to RenderFrameHosts

chrome/browser/permissions/permission_manager.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_MANAGER_H_
 #define CHROME_BROWSER_PERMISSIONS_PERMISSION_MANAGER_H_
 
 #include <unordered_map>
 
 #include "base/callback_forward.h"
 #include "base/id_map.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
+#include "chrome/browser/permissions/permission_util.h"
 #include "components/content_settings/core/browser/content_settings_observer.h"
 #include "components/content_settings/core/common/content_settings.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "content/public/browser/permission_manager.h"
 
 class PermissionContextBase;
 class Profile;
 
 namespace content {
 enum class PermissionType;
@@ skipping 47 matching lines @@
   // TODO(raymes): Refactor MediaPermission to not call GetPermissionContext.
   // See crbug.com/596786.
   friend class MediaPermission;
 
   class PendingRequest;
   using PendingRequestsMap = IDMap<PendingRequest, IDMapOwnPointer>;
 
   struct Subscription;
   using SubscriptionsMap = IDMap<Subscription, IDMapOwnPointer>;
 
-  struct PermissionTypeHash {
-    std::size_t operator()(const content::PermissionType& type) const;
-  };
-
   PermissionContextBase* GetPermissionContext(content::PermissionType type);
 
   // Called when a permission was decided for a given PendingRequest. The
   // PendingRequest is identified by its |request_id| and the permission is
   // identified by its |permission_id|. If the PendingRequest contains more than
   // one permission, it will wait for the remaining permissions to be resolved.
   // When all the permissions have been resolved, the PendingRequest's callback
   // is run.
   void OnPermissionsRequestResponseStatus(
       int request_id,
@@ skipping 14 matching lines @@
                      std::unique_ptr<PermissionContextBase>,
                      PermissionTypeHash>
       permission_contexts_;
 
   base::WeakPtrFactory<PermissionManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PermissionManager);
 };
 
 #endif // CHROME_BROWSER_PERMISSIONS_PERMISSION_MANAGER_H_