Remove MediaPlayer::invalidTime()

Remove MediaPlayer::invalidTime()

Remove MediaPlayer::invalidTime() (literal -1.0) replacing it with a NaN,
which is similar to how HTMLMediaElement::m_duration is handled.
Also remove MediaFragmentURIParser::invalidTimeValue() since it is unused.

BUG=350571
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=188460

[fs, 2015-01-14 15:10:20]

fs@opera.com changed reviewers:
+ philipj@opera.com

[fs, 2015-01-14 15:29:19]

This is wide open for bikeshedding, so go ahead and pick your favorite color!

[philipj_slow, 2015-01-14 20:33:18]

This color LGTM

[fs, 2015-01-15 09:19:08]

fs@opera.com changed reviewers:
+ jochen@chromium.org, mkwst@chromium.org

[fs, 2015-01-15 09:19:08]

Mike/Jochen: Race to RS the single line removal in platform/? =)

[Mike West, 2015-01-15 09:40:07]

LGTM I WIN!

[fs, 2015-01-15 10:10:49]

On 2015/01/15 09:40:07, Mike West wrote:
> LGTM I WIN!

Congratulations!

       ___
     .'__ '.
    / /_ |ST\
    |  | |  |
    \ <___> /
     ;.___.;
     |::|;;|
     |::/;;|
     |:/`\;|
     |/   \|

[fs, 2015-01-15 10:10:55]

The CQ bit was checked by fs@opera.com

[commit-bot: I haz the power, 2015-01-15 10:11:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/850943002/1

[commit-bot: I haz the power, 2015-01-15 10:28:30]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=188460