Implement DelegationTracker for tracking delegated permissions to RenderFrameHosts

chrome/browser/permissions/permission_util.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_util.h"
 
 #include "base/logging.h"
 #include "chrome/browser/content_settings/host_content_settings_map_factory.h"
 #include "chrome/browser/permissions/permission_uma_util.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "content/public/browser/permission_type.h"
 
 using content::PermissionType;
 
+std::size_t PermissionTypeHash::operator()(
+    const content::PermissionType& type) const {
+  return static_cast<size_t>(type);
+}
+
 // The returned strings must match the RAPPOR metrics in rappor.xml,
 // and any Field Trial configs for the Permissions kill switch e.g.
 // Permissions.Action.Geolocation etc..
 std::string PermissionUtil::GetPermissionString(
     content::PermissionType permission) {
   switch (permission) {
     case content::PermissionType::GEOLOCATION:
       return "Geolocation";
     case content::PermissionType::NOTIFICATIONS:
       return "Notifications";
@@ skipping 67 matching lines @@
       primary_url, secondary_url, content_type, resource_identifier);
 
   if (previous_value == CONTENT_SETTING_ALLOW &&
       final_value != CONTENT_SETTING_ALLOW) {
     PermissionType permission_type;
     if (PermissionUtil::GetPermissionType(content_type, &permission_type)) {
       PermissionUmaUtil::PermissionRevoked(permission_type, primary_url);
     }
   }
 }