fix(unblock): Remove 'context' check from unblock feature-flag.

The front-end is no longer sending this data to the server
so we can't use it in our decision-making; plus we intend for
it to be rolled out to all clients anyway.

config/index.js

@@ -509,24 +509,6 @@ var conf = convict({
       doc: 'signin unblock sample rate, between 0.0 and 1.0',
       default: 1.0,
       env: 'SIGNIN_UNBLOCK_RATE'
-    },
-    supportedClients: {
-      doc: 'support sign-in unblock for only these clients',
-      format: Array,
-      default: [
-        'web',
-        'oauth',
-        'iframe',
-        'fx_firstrun_v1',
-        'fx_firstrun_v2',
-        'fx_desktop_v1',
-        'fx_desktop_v2',
-        'fx_desktop_v3',
-        'fx_ios_v1',
-        'fx_ios_v2',
-        'fx_fennec_v1'
-      ],
-      env: 'SIGNIN_UNBLOCK_SUPPORTED_CLIENTS'
     }
   },
   hpkpConfig: {

lib/features.js

@@ -47,17 +47,6 @@ module.exports = config => {
         return true
       }
 
-      // While we're testing this feature, there may be some funky
-      // edge-cases in device login flows that haven't been fully tested.
-      // Temporarily avoid them for regular users by checking the `context` flag,
-      const context = request.payload &&
-        request.payload.metricsContext &&
-        request.payload.metricsContext.context
-
-      if (signinUnblock.supportedClients.indexOf(context) === -1) {
-        return false
-      }
-
       // Check to see if user in roll-out cohort.
       return isSampledUser(signinUnblock.sampleRate, uid, 'signinUnblock')
     },

test/local/features_tests.js

@@ -189,9 +189,6 @@ describe('features', () => {
       const email = 'blee@mozilla.com'
       const request = {
         payload: {
-          metricsContext: {
-            context: 'iframe'
-          }
         }
       }
       // First 27 characters are ignored, last 13 are 0.02 * 0xfffffffffffff
@@ -202,7 +199,6 @@ describe('features', () => {
       unblock.enabled = true
       unblock.sampleRate = 0.02
       unblock.allowedEmailAddresses = /.+@notmozilla.com$/
-      unblock.supportedClients = [ 'wibble', 'iframe' ]
       assert.equal(features.isSigninUnblockEnabledForUser(uid, email, request), false, 'should return false when email is not allowed and uid is not sampled')
 
       unblock.forcedEmailAddresses = /.+/
@@ -215,15 +211,6 @@ describe('features', () => {
       unblock.allowedEmailAddresses = /.+@notmozilla.com$/
       unblock.sampleRate = 0.03
       assert.equal(features.isSigninUnblockEnabledForUser(uid, email, request), true, 'should return when uid is sampled')
-
-
-      request.payload.metricsContext.context = ''
-      assert.equal(features.isSigninUnblockEnabledForUser(uid, email, request), false, 'should return false when context is not supported')
-
-
-      request.payload.metricsContext.context = 'iframe'
-      unblock.enabled = false
-      assert.equal(features.isSigninUnblockEnabledForUser(uid, email, request), false, 'should return false when feature is disabled')
     }
   )