Bug 5342918
The content rect of the WebView was being retrieved during
the draw while the viewport rect was being set when the
draw functor was setup. During animations, the content
rect was changing between the time the draw functor was
retrieved and it was executed. The content rect is now
being set with the viewport rect.
Wekbkit Change: I05d68dcc
Change-Id: I1b0978eeb27d9f1deddfeba3ede869f735f74394
82ed95f410