Make javadoc warnings into errors.
Make javadoc warnings into errors.

Change-Id: Ic2f98ffcc1568db5a3d5d97dd30de9d6dbfaf602

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