Revert "Merge pull request #13437 from brave/hsts-fingerprinting"

app/filtering.js

@@ -364,18 +364,6 @@ function registerForHeadersReceived (session, partition) {
       muonCb({ cancel: true })
       return
     }
-
-    let parsedTargetUrl = urlParse(details.url || '')
-    let parsedFirstPartyUrl = urlParse(firstPartyUrl)
-    const trackableSecurityHeaders = ['Strict-Transport-Security', 'Expect-CT',
-      'Public-Key-Pins', 'Public-Key-Pins-Report-Only']
-    if (isThirdPartyHost(parsedFirstPartyUrl.hostname, parsedTargetUrl.hostname)) {
-      trackableSecurityHeaders.forEach(function (header) {
-        delete details.responseHeaders[header]
-        delete details.responseHeaders[header.toLowerCase()]
-      })
-    }
-
     for (let i = 0; i < headersReceivedFilteringFns.length; i++) {
       let results = headersReceivedFilteringFns[i](details, isPrivate)
       if (!module.exports.isResourceEnabled(results.resourceName, firstPartyUrl, isPrivate)) {
@@ -844,15 +832,6 @@ module.exports.clearStorageData = () => {
   }
 }
 
-module.exports.clearHSTSData = () => {
-  for (let partition in registeredSessions) {
-    let ses = registeredSessions[partition]
-    setImmediate(() => {
-      ses.clearHSTSData.bind(ses)(() => {})
-    })
-  }
-}
-
 /**
  * Clears all session caches.
  */

app/sessionStore.js

@@ -823,15 +823,9 @@ module.exports.runPreMigrations = (data) => {
   }
 
   if (data.lastAppVersion) {
-    let runHSTSCleanup = false
-    try { runHSTSCleanup = compareVersions(data.lastAppVersion, '0.22.00') < 1 } catch (e) {}
-
-    if (runHSTSCleanup) {
-      filtering.clearHSTSData()
-    }
-
     // Force WidevineCdm to be upgraded when last app version <= 0.18.25
     let runWidevineCleanup = false
+
     try { runWidevineCleanup = compareVersions(data.lastAppVersion, '0.18.25') < 1 } catch (e) {}
 
     if (runWidevineCleanup) {

test/unit/app/sessionStoreTest.js

@@ -12,9 +12,7 @@ const compareVersions = require('compare-versions')
 require('../braveUnit')
 
 describe('sessionStore unit tests', function () {
-  let filtering
   let sessionStore
-
   let shutdownClearHistory = false
   let shutdownClearAutocompleteData = false
   let shutdownClearAutofillData = false
@@ -40,7 +38,6 @@ describe('sessionStore unit tests', function () {
     }
   }
   const fakeFiltering = {
-    clearHSTSData: () => {},
     clearStorageData: () => {},
     clearCache: () => {},
     clearHistory: () => {}
@@ -93,7 +90,6 @@ describe('sessionStore unit tests', function () {
       }
     })
     mockery.registerMock('./filtering', fakeFiltering)
-    filtering = require('./filtering')
     sessionStore = require('../../../app/sessionStore')
   })
 
@@ -793,7 +789,6 @@ describe('sessionStore unit tests', function () {
     let localeInitSpy
     let backupSessionStub
     let runImportDefaultSettings
-    let clearHSTSDataSpy
 
     before(function () {
       runPreMigrationsSpy = sinon.spy(sessionStore, 'runPreMigrations')
@@ -803,7 +798,6 @@ describe('sessionStore unit tests', function () {
       localeInitSpy = sinon.spy(fakeLocale, 'init')
       backupSessionStub = sinon.stub(sessionStore, 'backupSession')
       runImportDefaultSettings = sinon.spy(sessionStore, 'runImportDefaultSettings')
-      clearHSTSDataSpy = sinon.spy(filtering, 'clearHSTSData')
     })
 
     after(function () {
@@ -813,27 +807,6 @@ describe('sessionStore unit tests', function () {
       runPostMigrationsSpy.restore()
       localeInitSpy.restore()
       backupSessionStub.restore()
-      clearHSTSDataSpy.restore()
-    })
-
-    describe('check clearHSTSData invocations', function () {
-      describe('if lastAppVersion is 0.23', function () {
-        it('clearHSTSData is not invoked', function () {
-          let exampleState = sessionStore.defaultAppState()
-          exampleState.lastAppVersion = '0.23'
-          sessionStore.runPreMigrations(exampleState)
-          assert.equal(clearHSTSDataSpy.notCalled, true)
-        })
-      })
-
-      describe('if lastAppVersion is 0.21', function () {
-        it('clearHSTSData is calledOnce', function () {
-          let exampleState = sessionStore.defaultAppState()
-          exampleState.lastAppVersion = '0.21'
-          sessionStore.runPreMigrations(exampleState)
-          assert.equal(clearHSTSDataSpy.calledOnce, true)
-        })
-      })
     })
 
     describe('when reading the session file', function () {