Added channel_change and wget to whitelist for the terminal.
Added channel_change and wget to whitelist for the terminal.

Review URL: http://codereview.chromium.org/2841008

joshfire/chromiumos-platform-window_manager,joshfire/chromiumos-platform-window_manager,joshfire/chromiumos-platform-window_manager,joshfire/chromiumos-platform-window_manager