Page content sometimes missing while scrolling.

The logic when a page view to request the content had a logical
error and it was getting in a bad state where it never requested
the content anymore. This change simplifies the logic and minimizes
the kept state.

Removed unnecessary calls to recycle for a bitmap as according
to the graphics folks we should not be calling this API anymore.

bug:16966145

Change-Id: Idda8314b43343136d3b867167261790481116fac