wm: Don't log window titles.
wm: Don't log window titles.

BUG=none
TEST=none
TBR=gspencer

Review URL: http://codereview.chromium.org/2759004

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