This CL changes the relro creation and loading logic.
Instead of using a hardcoded path, now WebViewFactory queries the
package manager to get the lib path, which will be either
/system/priv-app/webview/lib/ or /data/app/... depending on the
presence of an update apk.
BUG:16403706
Change-Id: Icceb95da98e69032a19ac2ae8fe72ba1439e50ad