[iOS Media] Small inline controls can clip the time widgets

[iOS Media] Small inline controls can clip the time widgets
https://bugs.webkit.org/show_bug.cgi?id=142319

Reviewed by Eric Carlson.

Start counting the number of digits in a duration so that
we can assign classes to the time widgets that specify
a minimum width.

* Modules/mediacontrols/mediaControlsApple.css: Replace the hour-long and ten-hour-long
classes with number of digits.
(audio::-webkit-media-controls-time-remaining-display.five-digit-time):
(audio::-webkit-media-controls-current-time-display.five-digit-time):
(audio::-webkit-media-controls-time-remaining-display.six-digit-time):
(audio::-webkit-media-controls-current-time-display.six-digit-time):
(audio::-webkit-media-controls-time-remaining-display.hour-long-time): Deleted.
(audio::-webkit-media-controls-current-time-display.hour-long-time): Deleted.
(audio::-webkit-media-controls-time-remaining-display.ten-hour-long-time): Deleted.
(audio::-webkit-media-controls-current-time-display.ten-hour-long-time): Deleted.

* Modules/mediacontrols/mediaControlsApple.js: Add some new class names.
(Controller.prototype.updateDuration): Set the class of the time
widgets when we know how long the media runs.

* Modules/mediacontrols/mediaControlsiOS.css: Values for iOS that
are big enough to avoid clipping.
(video::-webkit-media-controls-current-time-display):
(video::-webkit-media-controls-time-remaining-display):
(video::-webkit-media-controls-current-time-display.three-digit-time):
(video::-webkit-media-controls-time-remaining-display.three-digit-time):
(video::-webkit-media-controls-current-time-display.four-digit-time):
(video::-webkit-media-controls-time-remaining-display.four-digit-time):
(video::-webkit-media-controls-current-time-display.five-digit-time):
(video::-webkit-media-controls-time-remaining-display.five-digit-time):
(video::-webkit-media-controls-current-time-display.six-digit-time):
(video::-webkit-media-controls-time-remaining-display.six-digit-time):
(audio::-webkit-media-controls-timeline-container): Deleted.
(video::-webkit-media-text-track-container): Deleted.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@181085 268f45cc-cd09-0410-ab3c-d52691b4dbfc