Restore exception behavior of getLocationInWindow.
Restore exception behavior of getLocationInWindow.

Restore exception throwing behavior on invalid arguments
for getLocationInWindow. This is tested by CTS.
Tweak some variable names to make the exception string readable.

Change-Id: I069d63b354d90ce74d156362b223765a5c2da2f0

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