// mWebView.goBack(); Intent intent = new Intent(MainActivity.this, SubWebview.class); startActivity(intent);

import android.app.Activity;
import android.os.Bundle;
import android.webkit.WebView;
import android.webkit.WebViewClient;

/**
 * Created by oo on 2017-09-22.
 */

public class SubWebview extends Activity {
    WebView mWeb;
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main2);

        mWeb = (WebView) findViewById(R.id.webView1);
        mWeb.getSettings().setJavaScriptEnabled(true);
        mWeb.loadUrl("http://m.naver.com");
        mWeb.setWebViewClient(new WebClient());
    }

    private class WebClient extends WebViewClient {
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return true;
        }
    }


}

<uses-permission android:name="android.permission.INTERNET" />

themes.xml 에 추가 

<item name="android:windowFullscreen">true</item>
<item name="windowNoTitle">true</item>

 I/chromium: [INFO:CONSOLE(241)] "Mixed Content: The page at
https 가 아닌 http 들어가 있는 경우아래 코드 추가 

webView.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);