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
R=brettw@chromium.org, sky@chromium.org

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

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228846 0039d316-1c4b-4281-b951-d872f2087c98
telemetry: Improved handling of timeline markers.

- Actions can now be queried which timeline marker they issue.
- Benchmarks search for those markers (possibly more than one), and extract all stats that overlap one of the timeline markers.
- This should also fix crbug.com/295767

R=nduca@chromium.org,dominikg@chromium.org
BUG=264308,295767

Review URL: https://codereview.chromium.org/24434002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228847 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 228847