Adds ModuleRegistryObserver interface

This will be used to know when a module has been added so that I can
download needed modules.

BUG=none
TEST=none
R=abarth@chromium.org

Review URL: https://codereview.chromium.org/187653004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255291 0039d316-1c4b-4281-b951-d872f2087c98
Move SigninTracker away from listening for SigninManager notifications

As part of eliminating Signin-related notifications, move SigninTracker to
observing the SigninManager.

BUG=349375
TBR=thakis

Review URL: https://codereview.chromium.org/180743018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255292 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255292
Disable QUIC port selection when the server is going away.
There is no point in trying to return to the same server, if that server
is no longer handling requests.

Review URL: https://codereview.chromium.org/186293002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255293 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255293
Blink roll 168526:168581

http://build.chromium.org/f/chromium/perf/dashboard/ui/changelog_blink.html?url=/trunk&range=168527:168581&mode=html
TBR=
BUG=

Review URL: https://codereview.chromium.org/188373004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255294 0039d316-1c4b-4281-b951-d872f2087c98
Mojo: Enable RemoteMessagePipeTest on Windows.

R=yzshen@chromium.org

Review URL: https://codereview.chromium.org/183873006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255295 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255296 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255296