this is reported at https://code.google.com/p/android/issues/detail?id=225523

Hi,
While visiting a https page verified by a cert from Symantec, https://knowledge.symantec.com/kb/index?page=content&actp=CROSSLINK&id=INFO2045 to be precise, webview fails with an SSL error (SSL_UNTRUSTED) while chrome (and every other browser we tried) works.

Installing the cert from the above location into android solves the issue we see from the webview. 

Some more info about the cert
Issued to: Symantec Class 3 Secure Server CA - G4
Issued by: VeriSign Class 3 Public Primary Certification Authority - G5

Thanks
Ashish