Make the OmniboxNavigationObserver update the ShortcutsProvider.

This means the ShortcutsProvider will only store shortcuts to successful
navigations, eliminating a major source of bad omnibox suggestions.

BUG=151044
TEST=Type "sughoidusgbpoiun.com" in omnibox, hit enter; retype "sugho" and ensure old bogus URL is not suggested
[email protected], [email protected]

Review URL: https://codereview.chromium.org/27057004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228846 0039d316-1c4b-4281-b951-d872f2087c98
5 files changed