change WebView to remove use of base class fields
change WebView to remove use of base class fields

This is done as its own step to make follow up patches easier on the eye.
(mostly implemented with eclipse refactor magic)

Change-Id: I23a9c1cbc5bba9a492e7e2ef1ddd275d84bec057

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