Hide system tray bubble after "Sign in to another account.." was clicked.

This prevents user from double clicking on "Sign in ..." button.

BUG=309735
TEST=manually

Review URL: https://codereview.chromium.org/176813009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253445 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 253445
Move it2me native messaging host implementation to remoting_core on windows.

This will reduce the size of remote_assistance_host.exe and thus the host download.
The size of the debug binary went down from 22MB to 440KB.

BUG=309844

Review URL: https://codereview.chromium.org/178473002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253446 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 253446
Add chrome.screenlockPrivate API functions to handle alternate auth types.

This CL adds the hideButton, setAuthType and getAuthType functions and the
onAuthAttempted event to the chrome.screenlockPrivate namespace. The
implementation of this API for ChromeOS is done in a separate CL.

BUG=344179
TEST=new api test

Review URL: https://codereview.chromium.org/168623003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253447 0039d316-1c4b-4281-b951-d872f2087c98
Rename ipc_untrusted -> ipc_nacl

BUG=345453

Review URL: https://codereview.chromium.org/178473007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253448 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 253447
SVN changes up to revision 253448