set webrtc handling policy in the browser process

app/browser/reducers/tabsReducer.js

@@ -4,6 +4,7 @@
 
 'use strict'
 
+const appConfig = require('../../../js/constants/appConfig')
 const appConstants = require('../../../js/constants/appConstants')
 const tabs = require('../tabs')
 const windows = require('../windows')
@@ -12,6 +13,8 @@ const {BrowserWindow} = require('electron')
 const tabState = require('../../common/state/tabState')
 const windowState = require('../../common/state/windowState')
 const tabActions = require('../../common/actions/tabActions')
+const siteSettings = require('../../../js/state/siteSettings')
+const siteSettingsState = require('../../common/state/siteSettingsState')
 const windowConstants = require('../../../js/constants/windowConstants')
 const windowActions = require('../../../js/actions/windowActions')
 const {makeImmutable} = require('../../common/state/immutableUtil')
@@ -75,13 +78,37 @@ const updateActiveTab = (state, closeTabId) => {
   }
 }
 
+const WEBRTC_DEFAULT = 'default'
+const WEBRTC_DISABLE_NON_PROXY = 'disable_non_proxied_udp'
+
+const getWebRTCPolicy = (state, tabId) => {
+  const tabValue = tabState.getByTabId(state, tabId)
+  if (tabValue == null) {
+    return WEBRTC_DEFAULT
+  }
+  const allSiteSettings = siteSettingsState.getAllSiteSettings(state, tabValue.get('incognito') === true)
+  const tabSiteSettings =
+    siteSettings.getSiteSettingsForURL(allSiteSettings, tabValue.get('url'))
+  const activeSiteSettings = siteSettings.activeSettings(tabSiteSettings, state, appConfig)
+
+  if (!activeSiteSettings || activeSiteSettings.fingerprintingProtection !== true) {
+    return WEBRTC_DEFAULT
+  } else {
+    return WEBRTC_DISABLE_NON_PROXY
+  }
+}
+
 const tabsReducer = (state, action, immutableAction) => {
   action = immutableAction || makeImmutable(action)
   switch (action.get('actionType')) {
     case tabActions.didStartNavigation.name:
     case tabActions.didFinishNavigation.name:
       {
-        state = tabState.setNavigationState(state, action.get('tabId'), action.get('navigationState'))
+        const tabId = action.get('tabId')
+        state = tabState.setNavigationState(state, tabId, action.get('navigationState'))
+        setImmediate(() => {
+          tabs.setWebRTCIPHandlingPolicy(tabId, getWebRTCPolicy(state, tabId))
+        })
         break
       }
     case tabActions.reload.name:

app/browser/tabs.js

@@ -772,6 +772,13 @@ const api = {
     }
   },
 
+  setWebRTCIPHandlingPolicy: (tabId, policy) => {
+    const tab = getWebContents(tabId)
+    if (tab && !tab.isDestroyed()) {
+      tab.setWebRTCIPHandlingPolicy(policy)
+    }
+  },
+
   goBack: (tabId) => {
     const tab = getWebContents(tabId)
     if (tab && !tab.isDestroyed()) {

app/renderer/components/frame/frame.js

@@ -56,11 +56,6 @@ const messages = require('../../../../js/constants/messages')
 const config = require('../../../../js/constants/config')
 
 const pdfjsOrigin = `chrome-extension://${config.PDFJSExtensionId}/`
-const WEBRTC_DEFAULT = 'default'
-const WEBRTC_DISABLE_NON_PROXY = 'disable_non_proxied_udp'
-// Looks like Brave leaks true public IP from behind system proxy when this option
-// is on.
-// const WEBRTC_PUBLIC_ONLY = 'default_public_interface_only'
 
 function isTorrentViewerURL (url) {
   const isEnabled = getSetting(settings.TORRENT_VIEWER_ENABLED)
@@ -274,10 +269,6 @@ class Frame extends React.Component {
 
     const cb = (prevProps = {}) => {
       this.onPropsChanged(prevProps)
-      if (this.getWebRTCPolicy(prevProps) !== this.getWebRTCPolicy(this.props)) {
-        this.webview.setWebRTCIPHandlingPolicy(this.getWebRTCPolicy(this.props))
-      }
-
       if (this.props.isActive && !prevProps.isActive && !this.props.urlBarFocused) {
         this.webview.focus()
       }
@@ -893,15 +884,6 @@ class Frame extends React.Component {
     }
   }
 
-  getWebRTCPolicy (props) {
-    const braverySettings = this.getFrameBraverySettings(props)
-    if (!braverySettings || braverySettings.get('fingerprintingProtection') !== true) {
-      return WEBRTC_DEFAULT
-    } else {
-      return WEBRTC_DISABLE_NON_PROXY
-    }
-  }
-
   mergeProps (state, ownProps) {
     const currentWindow = state.get('currentWindow')
     const frame = frameStateUtil.getFrameByKey(currentWindow, ownProps.frameKey) || Immutable.Map()