Convert ExpressionReceiver to kotlin.

js/js.translator/src/org/jetbrains/kotlin/js/translate/callTranslator/CallInfoExtensions.kt

@@ -41,7 +41,7 @@ fun CallInfo.isNative(): Boolean = AnnotationsUtils.isNativeObject(callableDescr
 
 fun CallInfo.isSuperInvocation(): Boolean {
     val dispatchReceiver = resolvedCall.getDispatchReceiver()
-    return dispatchReceiver is ExpressionReceiver && dispatchReceiver.getExpression() is KtSuperExpression
+    return dispatchReceiver is ExpressionReceiver && dispatchReceiver.expression is KtSuperExpression
 }
 
 val VariableAccessInfo.variableDescriptor: VariableDescriptor

js/js.translator/src/org/jetbrains/kotlin/js/translate/callTranslator/CallTranslator.kt

@@ -125,7 +125,7 @@ fun computeExplicitReceiversForInvoke(
     assert(explicitReceivers.extensionReceiver == null) { "'Invoke' call must have one receiver: $callElement" }
 
     fun translateReceiverAsExpression(receiver: ReceiverValue): JsExpression? =
-            (receiver as? ExpressionReceiver)?.let { Translation.translateAsExpression(it.getExpression(), context) }
+            (receiver as? ExpressionReceiver)?.let { Translation.translateAsExpression(it.expression, context) }
 
     val dispatchReceiver = resolvedCall.getDispatchReceiver()
     val extensionReceiver = resolvedCall.getExtensionReceiver()