| // Copyright 2015 The Cobalt Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // https://www.w3.org/TR/navigation-timing/#performance |
| |
| interface Performance { |
| readonly attribute PerformanceTiming timing; |
| |
| // Chromium custom member. |
| readonly attribute MemoryInfo memory; |
| |
| // Performance Resource Timing extensions to the Performance interface. |
| // https://w3c.github.io/resource-timing/#sec-extensions-performance-interface |
| void clearResourceTimings (); |
| void setResourceTimingBufferSize (unsigned long maxSize); |
| attribute EventHandler onresourcetimingbufferfull; |
| |
| // Web API: User Timing extensions to Performance |
| // https://www.w3.org/TR/2019/REC-user-timing-2-20190226/#extensions-performance-interface |
| [RaisesException] void mark(DOMString name); |
| [RaisesException] void measure( |
| DOMString measureName, |
| optional DOMString startMark = "", |
| optional DOMString endMark = ""); |
| void clearMarks(optional DOMString name = ""); |
| void clearMeasures(optional DOMString measureName = ""); |
| }; |