Add migrations for removing terms of use data.

app/scripts/migrations/011.js

@@ -0,0 +1,30 @@
+const version = 11
+
+/*
+
+This migration breaks out the CurrencyController substate
+
+*/
+
+module.exports = {
+  version,
+
+  migrate: function (versionedData) {
+    versionedData.meta.version = version
+    try {
+      const state = versionedData.data
+      const newState = transformState(state)
+      versionedData.data = newState
+    } catch (err) {
+      console.warn(`MetaMask Migration #${version}` + err.stack)
+    }
+    return Promise.resolve(versionedData)
+  },
+}
+
+function transformState (state) {
+  const newState = state
+  delete newState.TOSHash
+  delete newState.isDisclaimerConfirmed
+  return newState
+}

app/scripts/migrations/index.js

@@ -21,4 +21,5 @@ module.exports = [
   require('./008'),
   require('./009'),
   require('./010'),
+  require('./011'),
 ]

test/unit/migrations-test.js

@@ -6,6 +6,7 @@ const wallet1 = require(path.join('..', 'lib', 'migrations', '001.json'))
 const migration2 = require(path.join('..', '..', 'app', 'scripts', 'migrations', '002'))
 const migration3 = require(path.join('..', '..', 'app', 'scripts', 'migrations', '003'))
 const migration4 = require(path.join('..', '..', 'app', 'scripts', 'migrations', '004'))
+const migration11 = require(path.join('..', '..', 'app', 'scripts', 'migrations', '011'))
 
 const oldTestRpc = 'https://rawtestrpc.metamask.io/'
 const newTestRpc = 'https://testrpc.metamask.io/'
@@ -27,8 +28,11 @@ describe('wallet1 is migrated successfully', function() {
     }).then((thirdResult) => {
       assert.equal(thirdResult.data.config.provider.rpcTarget, null)
       assert.equal(thirdResult.data.config.provider.type, 'testnet')
+      return migration11.migrate(thirdResult)
+    }).then((eleventhResult) => {
+      assert.equal(eleventhResult.data.isDisclaimerConfirmed, null)
+      assert.equal(eleventhResult.data.TOSHash, null)
     })
-    
+
   })
 })
-