Fixes bug in extensions where we wouldn't allow an extension to select a pinned tab.
Fixes bug in extensions where we wouldn't allow an extension to select
a pinned tab.

BUG=33123
TEST=see bug

Review URL: http://codereview.chromium.org/661128

git-svn-id: http://src.chromium.org/svn/trunk/src@40136 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 73ddda73caa857872ee1d4643f7c2c4b07823e46
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