Better to associate true for "enable" and false for "disable".

The code reads better this way, and certainly is easier on human brain
to process their logic.

Change-Id: I3150fca3385931b9fe01ad13cb11fab410331349
Add a new chart type "GL 3D Bar" (working name).

Change-Id: I0b0a65bf4f9365a8d522e3c439afe19797b2fdd5