Fix how we calculate workarea size (_NET_WORKAREA gives width/height).
Fix how we calculate workarea size (_NET_WORKAREA gives width/height).

Fix how we calculate initial window size to be workarea - 20 for
height and width.  This matches Windows.

BUG=23229

Review URL: http://codereview.chromium.org/254004

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@27425 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser