Revert "Touch exploration feature, event bubling, refactor"

This reverts commit ac84d3ba81f08036308b17e1ab919e43987a3df5.

There seems to be a problem with this API change. Reverting for now to
fix the build.

Change-Id: Ifa7426b080651b59afbcec2d3ede09a3ec49644c
25 files changed