This fixes (again) the rendering problem we have with zero-height window resizes from Firefox.  It puts back the explicit window resize, but doesn't do it if the window is zero width or height.  This seems to fix the problem without causing resize problems in the beach demo.
This fixes (again) the rendering problem we have with zero-height
window resizes from Firefox.  It puts back the explicit window resize,
but doesn't do it if the window is zero width or height.  This seems to
fix the problem without causing resize problems in the beach demo.

TESTED=ran beach demo, 2d, and render-mode examples, in separate tabs
and checked to make sure that background tabs didn't draw over foreground
tabs (all in Firefox).
Review URL: http://codereview.chromium.org/267041

git-svn-id: http://src.chromium.org/svn/trunk/src@28610 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: a16d85a4af76de5e1a0ee839ea207fa9d6a596b5
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser