Revert "Fix for Concurrency issue reported in  525529"

This reverts commit 7eb1fcb76989f11aaa9ca0a78e0361239ff5317d.

Change-Id: I37815b93bf2b25caff171888dc13788479a9c8c4
CRs-Fixed: 585504
Use highp precision for scaled coordination

If scaled coordination is closer to zero than what
the medium precision can store, distance becomes
zero and it causes divided by zero.

Change-Id: I8ee921dd1f57564a442e685266b12d95fc08e165
base: Check for homeAsUp status when collapse actionbar widget

mHomeLayout should be visible if one of DISPLAY_SHOW_HOME or DISPLAY_HOME_AS_UP are set.
collapseItemActionView only checks for DISPLAY_SHOW_HOME, so applications that only uses
DISPLAY_HOME_AS_UP and uses an expandable/collapsible widget (like SearchView) doesn't
properly restore the home layout.
One sample of this behaviour is the DeskClock app. The CitiesActivity doesn't show the homeasup
indicator after collapse the searchview.

aosp change-id: https://android-review.googlesource.com/#/c/71093/

Change-Id: I2f225138771da6bd6b2a468ad616b90c2c0a9d35
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>