DevTools: Reduce space size in keyboard shortcut names.
DevTools: Reduce space size in keyboard shortcut names.

Use hair space \u200A instead of the regular one.

Review URL: https://codereview.chromium.org/1259883005

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@199690 bbb929c8-8fbe-4397-9dbb-9b2b20218538

Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk