Is Browse.live Web Safety safe?

// b = the per-page rule counter (content script "counter.js")// b.rules = the identificationRules array served by GET /blur/configstatic async reportRuleMatchCounts() {  if (adBlurCount === 0 && deceptorBlurCount === 0 &&      searchIdentifiedCount === 0 && reportRuleCount === 0) return;  const matchCounts = {};  // Ad-blocking rules: count elements matching each rule's CSS selector  for (const rule of rules) {    if (!["ad", "ad-shadowroot", "ad-backdrop"].includes(rule.ruleType)) continue;    if (rule.blurDistance !== 0 || !rule.srcSelector) continue;    const count = document.querySelectorAll(rule.srcSelector).length;    if (count > 0) matchCounts[rule.ruleId] = count;  }  // "report" rules -- e.g. ABIRR-1001, srcSelector "input[type=password]" --  // are counted the SAME way: only how many elements match, not their content.  for (const rule of rules) {    if (rule.ruleType !== "report") continue;    const count = countMatchingElements(document, rule.srcSelector);    if (count > 0) matchCounts[rule.ruleId] = count;  }  // ...other counters omitted...  const delta = diffAgainstLastSentCounts(matchCounts);  if (Object.keys(delta).length > 0) {    await MessageBackend.ReportImpression(delta); // -> background.js -> telemetry POST  }}

// S.rules = the same server-supplied identificationRules, filtered to// ruleType === "report". This runs in a SEPARATE injected script// (reportRuleData.js) from the counting path above.static findMatchingRuleValues(root) {  const valuesByRuleId = {};  // ...recurse into shadow roots (omitted here for brevity, same pattern)...  for (const rule of reportRules) {    // Only rules that name BOTH a selector and an attribute/field to read    // reach this branch -- this is where actual field CONTENT gets pulled.    if (rule.ruleType !== "report" || !rule.srcSelector || !rule.srcAttribute) continue;    const matches = root.querySelectorAll(rule.srcSelector);    for (const el of matches) {      let value = "";      try {        value = rule.srcAttribute.toLowerCase() === "innertext"          ? el.innerText          : el.getAttribute(rule.srcAttribute);      } catch (e) { value = e.message || "codeError"; }      if (value || value === 0) {        valuesByRuleId[rule.ruleId] = valuesByRuleId[rule.ruleId] || [];        valuesByRuleId[rule.ruleId].push(value); // the scraped text/attribute value      }    }  }  return valuesByRuleId; // -> sent via the ReportRuleData message}

// Fires on every top-frame navigation (background.js message handler// for "ContentInjected", called from content.js on every visible page)static async reportBrowseEvent(msg, sender) {  const reason = "Browse";  if (!await shouldSampleThisReason(reason)) return; // sampling rate, not a consent gate  const record = {    TelemetryReason: reason,    PageUrl: sender.url,    RootUrl: sender.tab?.url,    ReferrerUrl: msg.referrerUrl,    IsFrame: sender.frameId !== 0,  };  queueTelemetry(record); // merged with device/browser fields, then POSTed}// This function exists and checks the user's local "send telemetry" flag...static async isTelemetryEnabledInLocalConfig() {  const cfg = await getLocalConfig();  return "sendTelemetry" in cfg && cfg.sendTelemetry === true;}// ...but nothing in the codebase calls it. The function that IS called// before every send ignores the flag entirely:class ConsentGate {  static async canSendTelemetry() {    return true; // hardcoded -- no config, no user action, ever blocks this  }}static async sendBatchTelemetry(batch) {  if (!await ConsentGate.canSendTelemetry()) return "notconsented"; // never hit  return await httpPost(telemetryBatchUrl(), batch);}

// Runs on install, and again whenever more than 72e5 ms (2 hours)// have passed since the last check.static async runExtensionCheckIfDue() {  const last = await getLastExtensionCheckTime();  if (isStale(last, /* 2 hours */ 7_200_000)) {    await enumerateAndUploadInstalledExtensions();  }}static async enumerateAndUploadInstalledExtensions() {  const priorVerdicts = await getCachedExtensionVerdicts();  let installed = await chrome.management.getAll();  installed = installed.filter(e => e.type === "extension"); // drops apps/themes only  // merge in any cached verdict/prediction from a prior check, then:  await uploadInstalledExtensions(installed); // -> POST /browse/extension/verify}static async uploadInstalledExtensions(extensions = []) {  const lastChecked = await getLastExtensionCheckTime();  const nonce = await getOrCreateNonce();  const response = await verifyExtensionsOnServer(extensions, lastChecked, nonce);  // server's verdicts are cached locally per extension ID for next time}// The actual network call:static async verifyExtensionsOnServer(extensions = [], lastVerified = "", nonce = "") {  const url = `${verifyExtensionsUrl()}?lastVerified=${lastVerified}&nonce=${nonce}`;  const body = { extIdVersionList: [...extensions] }; // every installed extension, full objects  return await httpPost(url, body);}