Revert of Revert of Support casting for embedded YT videos

Revert of Revert of Support casting for embedded YT videos (https://codereview.chromium.org/339613002/)

Reason for revert:
Re-landing casting embedded YT feature.

Original issue's description:
> Revert of Support casting for embedded YT videos (https://codereview.chromium.org/302453012/)
> 
> Reason for revert:
> It appears to break compile on android:
> 
> ../../media/base/android/media_source_player_unittest.cc: In constructor 'media::MediaSourcePlayerTest::MediaSourcePlayerTest()':
> ../../media/base/android/media_source_player_unittest.cc:172:40:error: no matching function for call to 'media::MediaSourcePlayer::MediaSourcePlayer(int, media::MockMediaPlayerManager*, base::Callback<void(int)>, base::Callback<void(int)>, scoped_ptr<media::DemuxerAndroid>)'
>          surface_texture_a_is_next_(true) {}
>                                         ^
> ../../media/base/android/media_source_player_unittest.cc:172:40: note: candidates are:
> In file included from ../../base/basictypes.h:18:0,
>                  from ../../media/base/android/media_source_player_unittest.cc:7:
> ../../media/base/android/media_source_player.h:269:28: note: media::MediaSourcePlayer::MediaSourcePlayer(const media::MediaSourcePlayer&)
>    DISALLOW_COPY_AND_ASSIGN(MediaSourcePlayer);
>                             ^
> ../../base/macros.h:29:3: note: in definition of macro 'DISALLOW_COPY_AND_ASSIGN'
>    TypeName(const TypeName&);               \
>    ^
> ../../media/base/android/media_source_player.h:269:28: note:   candidate expects 1 argument, 5 provided
>    DISALLOW_COPY_AND_ASSIGN(MediaSourcePlayer);
>                             ^
> ../../base/macros.h:29:3: note: in definition of macro 'DISALLOW_COPY_AND_ASSIGN'
>    TypeName(const TypeName&);               \
>    ^
> In file included from ../../media/base/android/media_source_player_unittest.cc:15:0:
> ../../media/base/android/media_source_player.h:41:3: note: media::MediaSourcePlayer::MediaSourcePlayer(int, media::MediaPlayerManager*, const RequestMediaResourcesCB&, const ReleaseMediaResourcesCB&, scoped_ptr<media::DemuxerAndroid>, const GURL&)
>    MediaSourcePlayer(int player_id,
>    ^
> ../../media/base/android/media_source_player.h:41:3: note:   candidate expects 6 arguments, 5 provided
> ninja: build stopped: subcommand failed.
> 
> 
> Original issue's description:
> > Support casting for embedded YT videos
> > 
> > This is part 1 of the code to start supporting embedded YT for cast. The main
> > issue is that YT embedded videos need to be identified via the frame that
> > contains it. This CL sets the frame URL of each video in the MediaPlayerAndroid
> > object.
> > 
> > NOTRY=true
> > 
> > Clank downstream piece to come later. 
> > Min / Aaron: will send you the doc I have that explains this in more detail.
> > 
> > BUG=358573
> > 
> > Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=277425
> 
> NOTRY=true
> NOTREECHECK=true
> TBR=maybelle@chromium.org

TBR=qinmin@chromium.org,acolwell@chromium.org,avayvod@chromium.org,aberent@chromium.org,mfoltz@chromium.org,miguelg@chromium.org,cpalmer@chromium.org,binjin@chromium.org

[May, 2014-06-17 10:50:50]

Created Revert of Revert of Support casting for embedded YT videos

[commit-bot: I haz the power, 2014-06-17 10:52:25]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/maybelle@chromium.org/338243005/1

[commit-bot: I haz the power, 2014-06-17 10:52:26]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-06-17 10:52:27]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[aberent, 2014-06-17 10:52:29]

The CQ bit was unchecked by aberent@chromium.org

[binjin, 2014-06-17 10:53:47]

The CQ bit was unchecked by binjin@chromium.org

[binjin, 2014-06-17 10:54:31]

On 2014/06/17 10:50:50, may wrote:
> Created Revert of Revert of Support casting for embedded YT videos

This won't work well, please close this CL and land with original CL, also fix
the compile failure first

[whywhat, 2014-06-17 10:55:12]

lgtm

[qinmin, 2014-06-17 13:41:28]

lgtm.

It's better to create PS#1 from the original CL, and then have your new changes
as PS#2