Cherry pick Refactor native library path logic in WebViewFactory DO NOT MERGE
Cherry pick Refactor native library path logic in WebViewFactory DO NOT MERGE

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.

Original BUG:16403706
Original Change-Id: Icceb95da98e69032a19ac2ae8fe72ba1439e50ad

Bug: 16723226
Change-Id: Ia3155f72a735d75a566a8cc4c8c892d43b6cd371

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