fix creating vm acount

apps/remix-ide/src/blockchain/providers/vm.js

@@ -7,6 +7,7 @@ class VMProvider {
     this.executionContext = executionContext
     this.worker = null
     this.provider = null
+    this.newAccountCallback = {}
   }
 
   getAccounts (cb) {
@@ -44,6 +45,11 @@ class VMProvider {
           this.accounts = {}
           this.executionContext.setWeb3(this.executionContext.getProvider(), this.web3)
         }
+      } else if (msg.data.cmd === 'newAccountResult') {
+        if (this.newAccountCallback[msg.data.stamp]) {
+          this.newAccountCallback[msg.data.stamp](msg.data.error, msg.data.result)
+          delete this.newAccountCallback[msg.data.stamp]
+        }
       }
     })
 
@@ -54,13 +60,15 @@ class VMProvider {
   // can be removed later when we update the API
   createVMAccount (newAccount) {
     const { privateKey, balance } = newAccount
-    this.RemixSimulatorProvider.Accounts._addAccount(privateKey, balance)
+    this.worker.postMessage({ cmd: 'addAccount', privateKey: privateKey, balance })
     const privKey = Buffer.from(privateKey, 'hex')
     return '0x' + privateToAddress(privKey).toString('hex')
   }
 
   newAccount (_passwordPromptCb, cb) {
-    this.RemixSimulatorProvider.Accounts.newAccount(cb)
+    const stamp = Date.now()
+    this.newAccountCallback[stamp] = cb
+    this.worker.postMessage({ cmd: 'newAccount', stamp })
   }
 
   getBalanceInEther (address, cb) {

apps/remix-ide/src/blockchain/providers/worker-vm.ts

@@ -41,6 +41,36 @@ self.onmessage = (e: MessageEvent) => {
         })
       }
       
+      break
+    }
+    case 'addAccount':
+    {
+      if (provider) {
+        provider.Accounts._addAccount(data.privateKey, data.balance)
+      }
+      
+      break
+    }
+    case 'newAccount':
+    {
+      if (provider) {
+        provider.Accounts.newAccount((error, address: string) => {
+          if (error) {
+            self.postMessage({
+              cmd: 'newAccountResult',
+              error,
+              stamp: data.stamp
+            })
+          } else {
+            self.postMessage({
+              cmd: 'newAccountResult',
+              result: address,
+              stamp: data.stamp
+            })
+          }          
+        })
+      }
+      
       break
     }  
   }

libs/remix-ui/run-tab/src/lib/components/account.tsx

@@ -37,6 +37,20 @@ export function AccountUI (props: AccountProps) {
         })
         break
 
+      case 'vm-london':
+        setPlusOpt({
+          classList: '',
+          title: 'Create a new account'
+        })
+        break
+
+      case 'vm-berlin':
+        setPlusOpt({
+          classList: '',
+          title: 'Create a new account'
+        })
+        break
+
       case 'web3':
         if (!props.personalMode) {
           setPlusOpt({