InstantExtended: Add a finch flag to enable Instant Search.

Implemented chrome::GetInstantSearchURL() to get the default search engine Instant Search URL.

BUG=269186
TEST=none

Review URL: https://codereview.chromium.org/30533005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233130 0039d316-1c4b-4281-b951-d872f2087c98
Implemented UI for new first-run tutorial.

* Added new methods to ash::FirstRunHelper.
* Implemented tutorial flow in FirstRunController.
* Added base class Step and implemented for steps of tutorial.
* Added string resources and assets.
* Tutorial works correctly for RTL languages.

Knowing issues:
 * Buttons "Keep exploring" and "X" don't work yet.

BUG=269286

Review URL: https://codereview.chromium.org/46293002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233131 0039d316-1c4b-4281-b951-d872f2087c98
Ignore mouse movement events in flaky touch selection tests

There are some browser tests for touch text selection that occasionallly
receive unexpected mouse-entered/-moved/-exited events which break them
and make them flaky. Here, we ignore these kinds of unexpected events.

BUG=276992

Review URL: https://codereview.chromium.org/55953003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233132 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233131
Disable PolicyTest.SessionLengthLimit, WaitForInitialPolicySatisfied, and
WaitForInitialPolicyUsatisfied.

BUG=315308
TBR=bartfab@chromium.org

Review URL: https://codereview.chromium.org/59113006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233133 0039d316-1c4b-4281-b951-d872f2087c98
[rAc OSX] Enable links in Autofill dialog notifications.

Along the way, simplify the notification container by having individual
notification controllers send messages to the Autofill dialog's controller
directly.

BUG=286528
TEST=(see bug)
R=groby@chromium.org

Review URL: https://codereview.chromium.org/56183004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233134 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233134
Roll trace-viewer 1055->1057

TBR=nduca
BUG=315140
NOTRY=true

Review URL: https://codereview.chromium.org/60153005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233135 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233136 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233135
SVN changes up to revision 233136