Re-enable pref service's PreservedWindowPlacementIsLoaded ui test. 
Re-enable pref service's PreservedWindowPlacementIsLoaded ui test. 

Alter the test to use EXPECT_ instead of ASSERT_ when checking the window placement to not abort the test on data mismatch.

Review URL: http://codereview.chromium.org/115027

git-svn-id: http://src.chromium.org/svn/trunk/src@15429 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: fc1300027379fcf7ffa0258c958fc2f7c0667c80
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