Add BrowserFrame.setCertificate() method.
Add BrowserFrame.setCertificate() method.

This is needed for the Chrome HTTP stack to report SSL
certificates to WebView, in order to pass the CTS.

Change-Id: I0752a836ebaea21eae2084f037b18de4168f271f

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base