Multiple channels release with different installed location and user dir

requires brave/muon#276
requires brave/electron-packager#2
requires brave/electron-installer-debian#1
requires brave/electron-installer-redhat#1

@Auditors: @bsclifton, @bridiver, @bbondy, @aekeus

app/channel.js

@@ -10,7 +10,7 @@ const config = require('../js/constants/buildConfig')
 // The current channel is retrieved first from the buildConfig constants file,
 // then the environments and finally defaults to dev
 var channel = config.channel || process.env.CHANNEL || 'dev'
-let channels = new Set(['dev', 'beta', 'stable'])
+let channels = new Set(['nightly', 'developer', 'beta', 'dev'])
 
 if (!channels.has(channel)) {
   throw new Error(`Invalid channel ${channel}`)

app/windowsInit.js

@@ -9,7 +9,25 @@ const spawn = childProcess.spawn
 const spawnSync = childProcess.spawnSync
 const execSync = childProcess.execSync
 const app = electron.app
-const appUserModelId = 'com.squirrel.brave.Brave'
+const Channel = require('./channel')
+let appUserModelId = 'com.squirrel.brave.Brave'
+switch (Channel.channel()) {
+  case 'nightly':
+    appUserModelId = 'com.squirrel.BraveNightly.BraveNightly'
+    break
+  case 'developer':
+    appUserModelId = 'com.squirrel.BraveDeveloper.BraveDeveloper'
+    break
+  case 'beta':
+    appUserModelId = 'com.squirrel.BraveBeta.BraveBeta'
+    break
+  case 'dev':
+    appUserModelId = 'com.squirrel.brave.Brave'
+    break
+  default:
+    appUserModelId = 'com.squirrel.brave.Brave'
+    break
+}
 
 const getBraveBinPath = () => {
   const appPath = app.getPath('exe')

docs/buildingReleases.md

@@ -35,14 +35,14 @@ Then do the following per OS:
 
 ```
 CHANNEL=dev npm run build-package
-IDENTIFIER=id-here npm run build-installer
+CHANNEL=dev IDENTIFIER=id-here npm run build-installer
 ```
 
 **Windows:**
 
 ```
 CHANNEL=dev npm run build-package
-CERT_PASSWORD=‘password-here’ npm run build-installer
+CHANNEL=dev CERT_PASSWORD=‘password-here’ npm run build-installer
 ````
 
 Check virus scan: https://www.virustotal.com/en/

package.json

@@ -147,7 +147,7 @@
     "css-loader": "~0.28.7",
     "electron-builder": "^17.1.1",
     "electron-chromedriver": "^1.7.1",
-    "electron-packager": "brave/electron-packager",
+    "electron-packager": "brave/electron-packager#productDirName-overrides",
     "electron-prebuilt": "brave/electron-prebuilt",
     "empty-port": "0.0.2",
     "enzyme": "^2.9.1",
@@ -191,8 +191,8 @@
     "xml2js": "^0.4.15"
   },
   "optionalDependencies": {
-    "electron-installer-debian": "brave/electron-installer-debian",
-    "electron-installer-redhat": "brave/electron-installer-redhat"
+    "electron-installer-debian": "brave/electron-installer-debian#userDataDir-override",
+    "electron-installer-redhat": "brave/electron-installer-redhat#userDataDir-override"
   },
   "standard": {
     "global": [