Fix a logic mistake in ExecutorsManager::DeleteTabHandle that causes the broker to DCHECK fail every time a tab is closed.
Fix a logic mistake in ExecutorsManager::DeleteTabHandle that causes the broker to DCHECK fail every time a tab is closed.

BUG=0
TEST=None

Review URL: http://codereview.chromium.org/5174007

git-svn-id: http://src.chromium.org/svn/trunk/src@66678 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 335df0794c727a9c795b66b4b99a388285ef2ce1
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