Bug 490951 - Overview ruler inverted when using themed scroll.

Makes the HeaderPainter invisible if there are no scroll bars.
Fixes the computation of positions in the overview ruler.

Change-Id: I5900ac1bf9e03069a23c971c1bf82f46ed3650f0
Signed-off-by: Fabio Zadrozny <fabiofz@gmail.com>
2 files changed