Bluetooth: show notification when device is paired

Chrome OS security team are concerned that users may not be aware that
pairing a device makes it available to all users of the system. Use
the notification popups to inform of that after pairing, as agreed with
the security team.

BUG=239801
TEST=chromeos=1 on Linux, pair a device

Review URL: https://codereview.chromium.org/184963005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254839 0039d316-1c4b-4281-b951-d872f2087c98
ppapi: Send sync point whenever the pepper texture changes.

When giving a texture mailbox to the compositor, it's important
to give a sync point along with it, so the browser compositor does
not display the texture before it is ready.

Currently pepper is giving the mailbox to the compositor once
(without a sync point) and then just telling it that the texture
changed, without specifying a sync point for those changes.

Change it to always send a sync point with the mailbox, and when
the texture changes, reset the mailbox with a new sync point for
each frame.

BUG=333024

Review URL: https://codereview.chromium.org/185363009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254840 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254840
Remove create new user link.

Move the import overlay one level above the create profile
overlay. Remove create new user link and close the import
overlay when clicking cancel.

Screenshots can be found in the bug description.

BUG=343723

Review URL: https://codereview.chromium.org/186533003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254841 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254841