Cherry pick Load the WebView Java code from an APK. DO NOT MERGE
Cherry pick Load the WebView Java code from an APK. DO NOT MERGE

Use the WebView APK to load the Java code via createPackageContext.

Original Bug: 16329371
Original Change-Id: I1292edab639d85c2027dc8ebb52def8c36d41cde

Bug: 16723226
Change-Id: I8e692a5e12706f91a8af0a8b385bac336ce60913

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