Calculate taskbar content size for edu

Using the value calculated in layout was not working because TaskbarView onLayout() was being called after TaskbarEduView onMeasure(). Now uses the same value on all orientations based on taskbar icon size.

Fixes: 252945031
Test: manual
Change-Id: Ib6914901638c82f3b3ec4c9b86f6c20e84d34d0f
3 files changed