Use a dynamically filled placeholder for the year in the copyright string

BUG=170723
NOTRY=true

Review URL: https://codereview.chromium.org/59903025

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235141 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235141
InstantExtended: update tests for Instant Extended (part 6).

Update search provider and toolbar unit tests for Instant Extended. Note that
this is split off from http://crrev.com/24733003 so that it's not a single
mega-CL.

BUG=297915
R=pkasting@chromium.org

Review URL: https://codereview.chromium.org/61893028

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235142 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235142