Implement DelegationTracker for tracking delegated permissions to RenderFrameHosts

chrome/browser/permissions/permission_manager.cc

 // 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.
 
 #include "chrome/browser/permissions/permission_manager.h"
 
 #include <stddef.h>
 
 #include "base/callback.h"
 #include "base/memory/ptr_util.h"
 #include "build/build_config.h"
 #include "chrome/browser/background_sync/background_sync_permission_context.h"
 #include "chrome/browser/content_settings/host_content_settings_map_factory.h"
 #include "chrome/browser/media/media_stream_device_permission_context.h"
 #include "chrome/browser/media/midi_permission_context.h"
 #include "chrome/browser/notifications/notification_permission_context.h"
 #include "chrome/browser/permissions/permission_context_base.h"
 #include "chrome/browser/permissions/permission_manager_factory.h"
 #include "chrome/browser/permissions/permission_request_id.h"
 #include "chrome/browser/permissions/permission_uma_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/push_messaging/push_messaging_permission_context.h"
 #include "chrome/browser/storage/durable_storage_permission_context.h"
 #include "chrome/browser/tab_contents/tab_util.h"
 #include "chrome/common/features.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
-#include "content/public/browser/permission_type.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/web_contents.h"
 
 #if defined(OS_ANDROID) || defined(OS_CHROMEOS)
 #include "chrome/browser/media/protected_media_identifier_permission_context.h"
 #endif
 
 #if BUILDFLAG(ANDROID_JAVA_UI)
 #include "chrome/browser/geolocation/geolocation_permission_context_android.h"
@@ skipping 272 matching lines @@
                 weak_ptr_factory_.GetWeakPtr(), request_id, i)));
   }
 
   // The request might have been resolved already.
   if (!pending_requests_.Lookup(request_id))
     return kNoPendingOperation;
 
   return request_id;
 }
 
-std::size_t PermissionManager::PermissionTypeHash::operator()(
-    const content::PermissionType& type) const {
-  return static_cast<size_t>(type);
-}
-
 PermissionContextBase* PermissionManager::GetPermissionContext(
     PermissionType type) {
   const auto& it = permission_contexts_.find(type);
   return it == permission_contexts_.end() ? nullptr : it->second.get();
 }
 
 void PermissionManager::OnPermissionsRequestResponseStatus(
     int request_id,
     int permission_id,
     PermissionStatus status) {
@@ skipping 140 matching lines @@
     // Add the callback to |callbacks| which will be run after the loop to
     // prevent re-entrance issues.
     callbacks.push_back(
         base::Bind(subscription->callback,
                    ContentSettingToPermissionStatus(new_value)));
   }
 
   for (const auto& callback : callbacks)
     callback.Run();
 }