PGO build other change
PGO build other change

- I am not pursuing the 'another sln target' approach. PGO will happen
as an option of a release build.

This change is to fix an build error because the theme dll does not contain code
so it is an error to pass optimization flags. So we override it for that project.

BUG=21932
TEST=none


Review URL: http://codereview.chromium.org/248039

git-svn-id: http://src.chromium.org/svn/trunk/src@27626 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 2ccaddfce7e9a96100cbd2d26e39bdd51d1e8aef
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