DevTools: [CodeMirror] autocomplete should not eat next word
DevTools: [CodeMirror] autocomplete should not eat next word

This patch fixes autocomplete so that it won't eat the next letters
that follow the autocompletion prefix.

BUG=
R=apavlov@chromium.org

Review URL: https://codereview.chromium.org/18112020

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@153899 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs