linux: remove the xmessage-based error dialog
linux: remove the xmessage-based error dialog

Since this is for developers only, developers use the console
anyway.  The dialog is cute but superfluous and actually kind
of annoying.

BUG=37026

Review URL: http://codereview.chromium.org/5905005

git-svn-id: http://src.chromium.org/svn/trunk/src@69484 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 577dbae6fe84256e033cb95e85c7c72894e81b78
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