When webview draws into an fbo layer, it needs to know the
size of that surface to create the rendering transform appropriately.
This change copies in the current viewport size to the structure that
is passed to the webview.
Change-Id: I7160b0836d00834134c799c95a439cdc045e2035
WebView needs more fine-grained control over the behavior of the
framework upon execution of the display lists. The new status_t
allows WebView to requests its functor to be re-executed directly
without causing a redraw of the entire hierarchy.
Change-Id: I97a8141dc5c6eeb6805b6024cc1e76fce07d24cc
