Removing duplicated calls in BrowserView::ProcessTabSelected  2nd UpdateUIForContents(new_content)  UpdateToolbar.
Removing duplicated calls in BrowserView::ProcessTabSelected
 2nd UpdateUIForContents(new_content)
 UpdateToolbar.

BUG=chromium-os:8632
TEST=none

Review URL: http://codereview.chromium.org/6286159

git-svn-id: http://src.chromium.org/svn/trunk/src@74174 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 4b7cf58e6ccd4d9bcd3cbeca3a097dde01a614be
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