问低于android 5.0版本的Web视图页面不显示，但在5.1.1中工作，在4.4.2中仅显示空白屏幕

EN

public class WebViewTwo extends Activity {
WebView webView;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.web_view_two);
    webView = (WebView)findViewById(R.id.webView2);
    WebSettings webSettings = webView.getSettings();
    webSettings.setJavaScriptEnabled(true);
    webView.getSettings().setLoadsImagesAutomatically(true);
    webView.getSettings().setBuiltInZoomControls(true);
    webView.setWebViewClient(new WebViewClient());
    webView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
    webView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
    webView.getSettings().setPluginState(WebSettings.PluginState.ON);
    webView.setWebChromeClient(new WebChromeClient());
    webView.loadUrl("www.google.co.in");
}

07-21 12:26:13.053    2089-2104/com.ccc.dar E/eglCodecCommon﹕ glUtilsParamSize: unknow param 0x00000b44
07-21 12:26:13.064    2089-2104/com.ccc.dar E/eglCodecCommon﹕ glUtilsParamSize: unknow param 0x00000bd0
07-21 12:26:13.167    2089-2104/com.ccc.dar E/eglCodecCommon﹕ **** ERROR unknown type 0x79edaef5 (glSizeof,72)
07-21 12:26:13.184    2089-2104/com.ccc.dar E/eglCodecCommon﹕ glUtilsParamSize: unknow param 0x00000b44
07-21 12:26:13.194    2089-2104/com.ccc.dar E/eglCodecCommon﹕ glUtilsParamSize: unknow param 0x00000bd0
07-21 12:26:13.214    2089-2096/com.ccc.dar W/art﹕ Suspending all threads took: 22.429ms
07-21 12:26:13.238    2089-2104/com.ccc.dar E/eglCodecCommon﹕ **** ERROR unknown type 0x79edaef5 (glSizeof,72)
07-21 12:26:13.435    2089-2104/com.ccc.dar E/eglCodecCommon﹕ glUtilsParamSize: unknow param 0x00000b44
07-21 12:26:13.457    2089-2104/com.ccc.dar E/eglCodecCommon﹕ glUtilsParamSize: unknow param 0x00000bd0
07-21 12:26:13.499    2089-2101/com.ccc.dar I/art﹕ Background sticky concurrent mark sweep GC freed 1125(118KB) AllocSpace objects, 1(16KB) LOS objects, 0% free, 5MB/5MB, paused 2.405ms total 145.580ms
07-21 12:26:13.584    2089-2104/com.ccc.dar E/eglCodecCommon﹕ **** ERROR unknown type 0x79edaef5 (glSizeof,72)
07-21 12:26:44.980    2089-2096/com.ccc.dar W/art﹕ Suspending all threads took: 11.554ms