Added unit test for the views::ProgressBar::AddProgress method.
Added unit test for the views::ProgressBar::AddProgress method.

BUG=37960
TEST=Run unit_tests.

Review URL: http://codereview.chromium.org/1216007

git-svn-id: http://src.chromium.org/svn/trunk/src@42731 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 67ecad6c5371e7cc8316ab36f7a2a7c5a6df5487
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