wm: Fix incorrect names for key binding actions.
wm: Fix incorrect names for key binding actions.

BUG=none
TEST=none
TBR=gspencer

Review URL: http://codereview.chromium.org/2087007

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