Re-record mobile-news page for key_mobile_sites page set.

We had some issues with Telemetry scrolling the page before it is ready to
scroll. The page now has a variable (NEWS_telemetryReady) to indicate that it's
ready to be scrolled.
This patch contains the recording of the new version of the page and updates the
navigate steps accordingly.

BUG=248928

Review URL: https://codereview.chromium.org/157483002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249716 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249716
[AudioPlayer] Enable new audio-player by default

This patch is the reland of 248688, and a succeeding of r248688.

BUG=273308
TEST=manually tested
TBR=hirono@chromium.org

NOTRY=True
# For chromeos_linux trybot already passes

Review URL: https://codereview.chromium.org/157333002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249717 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249717