Reland of Delete unused file mediacommon.h.

Reland of Delete unused file mediacommon.h. (patchset #1 id:1 of https://codereview.webrtc.org/2441493003/ )

Reason for revert:
#include of mediacommon.h now deleted in the offending downstream app.

Original issue's description:
> Revert of Delete unused file mediacommon.h. (patchset #1 id:1 of https://codereview.webrtc.org/2437703002/ )
>
> Reason for revert:
> Turned out this broke a downstream app. Reverting while investigating.
>
> Original issue's description:
> > Delete unused file mediacommon.h.
> >
> > BUG=None
> >
> > Committed: https://crrev.com/a34e796a1b59a1068c77a3e36d2a24fd37c08afc
> > Cr-Commit-Position: refs/heads/master@{#14689}
>
> TBR=magjed@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=None
>
> Committed: https://crrev.com/ca20e7cfed301982986a4da23c819b4e50b5a6e9
> Cr-Commit-Position: refs/heads/master@{#14697}

TBR=magjed@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=None

Committed: https://crrev.com/dda1e6015345a98f6e62b872a052754a61a9e1ea
Cr-Commit-Position: refs/heads/master@{#14718}

[nisse-webrtc, 2016-10-21 06:56:59]

The CQ bit was checked by nisse@webrtc.org

[nisse-webrtc, 2016-10-21 06:56:59]

Created Reland of Delete unused file mediacommon.h.

[commit-bot: I haz the power, 2016-10-21 06:57:11]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2016-10-21 06:57:19]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-21 06:57:22]

Description was changed from

==========
Reland of Delete unused file mediacommon.h. (patchset #1 id:1 of
https://codereview.webrtc.org/2441493003/ )

Reason for revert:
#include of mediacommon.h now deleted in the offending downstream app.

Original issue's description:
> Revert of Delete unused file mediacommon.h. (patchset #1 id:1 of
https://codereview.webrtc.org/2437703002/ )
> 
> Reason for revert:
> Turned out this broke a downstream app. Reverting while investigating.
> 
> Original issue's description:
> > Delete unused file mediacommon.h.
> >
> > BUG=None
> >
> > Committed: https://crrev.com/a34e796a1b59a1068c77a3e36d2a24fd37c08afc
> > Cr-Commit-Position: refs/heads/master@{#14689}
> 
> TBR=magjed@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=None
> 
> Committed: https://crrev.com/ca20e7cfed301982986a4da23c819b4e50b5a6e9
> Cr-Commit-Position: refs/heads/master@{#14697}

TBR=magjed@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=None
==========

to

==========
Reland of Delete unused file mediacommon.h. (patchset #1 id:1 of
https://codereview.webrtc.org/2441493003/ )

Reason for revert:
#include of mediacommon.h now deleted in the offending downstream app.

Original issue's description:
> Revert of Delete unused file mediacommon.h. (patchset #1 id:1 of
https://codereview.webrtc.org/2437703002/ )
>
> Reason for revert:
> Turned out this broke a downstream app. Reverting while investigating.
>
> Original issue's description:
> > Delete unused file mediacommon.h.
> >
> > BUG=None
> >
> > Committed: https://crrev.com/a34e796a1b59a1068c77a3e36d2a24fd37c08afc
> > Cr-Commit-Position: refs/heads/master@{#14689}
>
> TBR=magjed@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=None
>
> Committed: https://crrev.com/ca20e7cfed301982986a4da23c819b4e50b5a6e9
> Cr-Commit-Position: refs/heads/master@{#14697}

TBR=magjed@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=None

Committed: https://crrev.com/dda1e6015345a98f6e62b872a052754a61a9e1ea
Cr-Commit-Position: refs/heads/master@{#14718}
==========

[commit-bot: I haz the power, 2016-10-21 06:57:23]

Patchset 1 (id:??) landed as
https://crrev.com/dda1e6015345a98f6e62b872a052754a61a9e1ea
Cr-Commit-Position: refs/heads/master@{#14718}