Revert of Delete empty API files and cleaned up includes.

Revert of Delete empty API files and cleaned up includes. (patchset #2 id:20001 of https://codereview.webrtc.org/1809053002/ )

Reason for revert:
Breaks Chromium build. Need to remove the references to the obsolete header files from Chromium and reland.

Original issue's description:
> Delete empty API files and cleaned up includes.
>
> TBR=glaznev@webrtc.org
>
> BUG=webrtc:5426
>
> Committed: https://crrev.com/c9022f508644dc33c01b05cb22ebfc2be145d6b2
> Cr-Commit-Position: refs/heads/master@{#12039}

TBR=nisse@webrtc.org,glaznev@webrtc.org,perkj@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:5426
Committed: https://crrev.com/246b5273986d5a5b140b3d1a656baa8d40c36276
Cr-Commit-Position: refs/heads/master@{#12042}

[Taylor Brandstetter, 2016-03-17 22:03:16]

Created Revert of Delete empty API files and cleaned up includes.

[commit-bot: I haz the power, 2016-03-17 22:03:27]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1813083002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1813083002/1

[commit-bot: I haz the power, 2016-03-17 22:03:44]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-17 22:03:53]

Description was changed from

==========
Revert of Delete empty API files and cleaned up includes. (patchset #2 id:20001
of https://codereview.webrtc.org/1809053002/ )

Reason for revert:
Breaks Chromium build. Need to remove the references to the obsolete header
files from Chromium and reland.

Original issue's description:
> Delete empty API files and cleaned up includes.
> 
> TBR=glaznev@webrtc.org
> 
> BUG=webrtc:5426
> 
> Committed: https://crrev.com/c9022f508644dc33c01b05cb22ebfc2be145d6b2
> Cr-Commit-Position: refs/heads/master@{#12039}

TBR=nisse@webrtc.org,glaznev@webrtc.org,perkj@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:5426
==========

to

==========
Revert of Delete empty API files and cleaned up includes. (patchset #2 id:20001
of https://codereview.webrtc.org/1809053002/ )

Reason for revert:
Breaks Chromium build. Need to remove the references to the obsolete header
files from Chromium and reland.

Original issue's description:
> Delete empty API files and cleaned up includes.
>
> TBR=glaznev@webrtc.org
>
> BUG=webrtc:5426
>
> Committed: https://crrev.com/c9022f508644dc33c01b05cb22ebfc2be145d6b2
> Cr-Commit-Position: refs/heads/master@{#12039}

TBR=nisse@webrtc.org,glaznev@webrtc.org,perkj@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:5426

Committed: https://crrev.com/246b5273986d5a5b140b3d1a656baa8d40c36276
Cr-Commit-Position: refs/heads/master@{#12042}
==========

[commit-bot: I haz the power, 2016-03-17 22:03:54]

Patchset 1 (id:??) landed as
https://crrev.com/246b5273986d5a5b140b3d1a656baa8d40c36276
Cr-Commit-Position: refs/heads/master@{#12042}

[perkj_webrtc, 2016-03-20 15:19:37]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.webrtc.org/1819733002/ by perkj@webrtc.org.

The reason for reverting is: New attempt. Cl for removing videosourceinterface.h
dep in chrome is landed here: https://codereview.chromium.org/1810273003/.