Chrome扩展程序：onCommitted会触发两次*，包括检查frameId *

Question

我正在编写一个简单的页面计数器扩展名。如果页面匹配给定的表达式（在这种情况下是facebook.com），我希望它增加数组中的计数器（我希望能够单独计算单独的选项卡）。我设置了一个onCommitted事件来捕获经过的页面。

这里的其他人在每帧一次的onCommitted射击时遇到了麻烦，所以我确保包括帧检查。实际上，似乎有 nothing 我可以检查以确定哪个onCommitted事件是重要事件。我打印了每个请求的详细信息，两个请求都有相同的详细信息，直到时间戳。

它与附加一个onCommitted监听器有关，因为注释掉另一个监听器将“解决”问题。但我应该能够附加多个onCommitted监听器，对吗？

background.js

'use strict';

var trackedTabs = {};

//if this line is commented out, the below script runs correctly (increments once). otherwise increments twice
chrome.webNavigation.onCommitted.addListener(function(details) {console.log("listens to all, details are %o", details);});

var tabFunctions = {
    'onBeforeRequest': function(details) {
        //if a tab appears that matches the expression below, "register" it to trackedTabs
        trackedTabs[details.tabId] = 0;
    },
    'onCommitted': function(details) {
        if(details.frameId == 0) {
            //this happens twice per page if the above listener is attached
            console.log("Incrementing page count from %o", trackedTabs[details.tabId]);
            trackedTabs[details.tabId]++;
            //note that the request that increments from 0 to 1 and the one that increments from 1 to 2 have the same details           
            console.log(details);
        }
    }
};
chrome.webRequest.onBeforeRequest.addListener(tabFunctions['onBeforeRequest'], {'urls': ["*://facebook.com/", "*://*.facebook.com/*"], 'types': ['main_frame']}, ['blocking', 'requestBody']);
chrome.webNavigation.onCommitted.addListener(tabFunctions['onCommitted'], {'url': [{urlMatches: ".*?facebook.*?"}]});

的manifest.json

{
    "manifest_version": 2,
    "name": "__MSG_extension_name__",
    "version": "3.2.0",
    "description": "__MSG_extension_description__",
    "author": "Lucidea",
    "background": {
        "scripts": ["background.js"]
    },
    "permissions": [
        "<all_urls>",
        "notifications",
        "tabs",
        "webRequest",
        "webRequestBlocking",
        "webNavigation",
        "storage",
        "unlimitedStorage",
        "contextMenus"
    ]
}

编辑：

日志输出中断

background.js:6 listens to all, details are Object
background.js:6 listens to all, details are Object
background.js:16 Incrementing page count from 0
background.js:19 Object {frameId: 0, processId: 897, tabId: 750, timeStamp: 1470333847318.882, transitionQualifiers: Array[1]…}
background.js:6 listens to all, details are Object
background.js:16 Incrementing page count from 1
background.js:19 Object {frameId: 0, processId: 897, tabId: 750, timeStamp: 1470333847318.882, transitionQualifiers: Array[1]…}
background.js:6 listens to all, details are Object
background.js:6 listens to all, details are Object

我已将该扩展名作为zip文件上传到https://www.dropbox.com/s/tbq6iqcgjojhkmo/oncommitted-runs-twice.zip

我的Chrome版本为52.0.2743.82