Spin progress indicator while clearing data; use bindings.
Spin progress indicator while clearing data; use bindings.

BUG=http://crbug.com/20618
TEST=clear browsing data; ensure that spinner spins

Review URL: http://codereview.chromium.org/181026

git-svn-id: http://src.chromium.org/svn/trunk/src@25175 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 011746805e8caec1b1a4702c91e5fe0431122b22
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