Revert "Fix overflow visibility logic"

This reverts commit 919296825af7c9028eac0f9c0be6d6c9fbda2184

Change-Id: Iba8cdc0f6d1023b12b7873314df13154f2cf265d
Merge remote-tracking branch 'upstream/cm-10.1' into cm-10.1
Revert "Improve scroll responsiveness."

This reverts commit ce6b2513bcfb257cfdeb604060708b3833ccb65e

Change-Id: Id1b264c9f4417a2c3f22f3821f446fb9211f4616
Merge "Revert "Improve scroll responsiveness."" into cm-10.1
Merge remote-tracking branch 'upstream/cm-10.1' into cm-10.1