[SalesForce] How to refresh the parent window after opening a pop up window from inline page

I opened a Popup from an inline VF page in SFDC and then after some action I was able to close the window but needed a refresh of the Top window from inline frame .

My code is as below for opening a pop up.Note this is inline page

<apex:page standardController="Account" extensions="Accountctrl">
 <apex:form >
 <script>
   function openwindow(){
      window.open("/apex/pagereal", "myWindow", "width=200, height=100");
   }
 </script>
 <apex:pageBlock >
 <apex:pageBlockSection columns="1" id="Test" >
    <apex:inputcheckbox value="{!test.istest__c}" label="Same as Above">
    <apex:actionSupport event="onchange" rerender="Test" />
</apex:inputcheckbox>
  <apex:outputPanel rendered="{!NOT(test.istest__c)}"> 
<apex:inputField value="{!test.Campaign__c}" />
<apex:inputField value="{!test.cust_vendor__c}" />
</apex:outputPanel>
<apex:commandButton value="Tetete" onclick="openwindow();"/>
  </apex:pageBlockSection> 
</apex:form>
</apex:page>

And my popup page code is as below and I want to redirect top frame from inline page

<apex:page >

  <script>

  function test(){
     alert('hello');
     window.opener.top.location.href='https://googleflowauth-dev- ed.my.salesforce.com/001900000096agv';
  }

   </script>
   <apex:form >
    <!-- End Default Content REMOVE THIS -->
     <apex:commandButton onclick="test()" value="Test"/>
    </apex:form>

The error is pretty much I know that it is for security browsers dont allow

Unsafe JavaScript attempt to initiate navigation for frame with URL 'https://googleflowauth-dev-ed.my.salesforce.com/001900000096agv' from frame with URL 'https://googleflowauth-dev-ed–c.ap1.visual.force.com/apex/pagereal'. The frame attempting navigation is neither same-origin with the target, nor is it the target's parent or opener.

I am happy if i get workaround for same