Reland of Delete cryptstring.h and cryptstring.cc.

Reland of Delete cryptstring.h and cryptstring.cc. (patchset #1 id:1 of https://codereview.webrtc.org/2742743002/ )

Reason for revert:
CryptString usage is now deleted in Chrome, see cl https://codereview.chromium.org/2738973004/

Original issue's description:
> Revert of Delete cryptstring.h and cryptstring.cc. (patchset #1 id:1 of https://codereview.webrtc.org/2740633003/ )
> 
> Reason for revert:
> It turns out cryptstring was used by Chrome. In the xmpp code recently moved there from webrtc.
> 
> So this code has to be moved too, it canät just be deleted.
> 
> Original issue's description:
> > Delete cryptstring.h and cryptstring.cc.
> > 
> > They became unused with cl https://codereview.webrtc.org/2731673002/
> > 
> > BUG=webrtc:6424
> > 
> > Review-Url: https://codereview.webrtc.org/2740633003
> > Cr-Commit-Position: refs/heads/master@{#17128}
> > Committed: https://chromium.googlesource.com/external/webrtc/+/822638b48111800434d7d4be6fef2f27c4e6e451
> 
> TBR=pthatcher@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:6424
> 
> Review-Url: https://codereview.webrtc.org/2742743002
> Cr-Commit-Position: refs/heads/master@{#17130}
> Committed: https://chromium.googlesource.com/external/webrtc/+/d6652076011363ab329d5cc4643619e4728303c7

TBR=pthatcher@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6424
Review-Url: https://codereview.webrtc.org/2745523004
Cr-Commit-Position: refs/heads/master@{#17160}
Committed: https://chromium.googlesource.com/external/webrtc/+/05a087802b3494ec448f191722c2c57f9b3a507c

[nisse-webrtc, 2017-03-10 08:27:30]

The CQ bit was checked by nisse@webrtc.org

[nisse-webrtc, 2017-03-10 08:27:30]

Created Reland of Delete cryptstring.h and cryptstring.cc.

[commit-bot: I haz the power, 2017-03-10 08:27:39]

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, 2017-03-10 08:27:45]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1489134450323510, "parent_rev":
"11465c1a9d526722d3658c222426bbc54e086dba", "commit_rev":
"05a087802b3494ec448f191722c2c57f9b3a507c"}

[commit-bot: I haz the power, 2017-03-10 08:27:48]

Description was changed from

==========
Reland of Delete cryptstring.h and cryptstring.cc. (patchset #1 id:1 of
https://codereview.webrtc.org/2742743002/ )

Reason for revert:
CryptString usage is now deleted in Chrome, see cl
https://codereview.chromium.org/2738973004/

Original issue's description:
> Revert of Delete cryptstring.h and cryptstring.cc. (patchset #1 id:1 of
https://codereview.webrtc.org/2740633003/ )
> 
> Reason for revert:
> It turns out cryptstring was used by Chrome. In the xmpp code recently moved
there from webrtc.
> 
> So this code has to be moved too, it canät just be deleted.
> 
> Original issue's description:
> > Delete cryptstring.h and cryptstring.cc.
> > 
> > They became unused with cl https://codereview.webrtc.org/2731673002/
> > 
> > BUG=webrtc:6424
> > 
> > Review-Url: https://codereview.webrtc.org/2740633003
> > Cr-Commit-Position: refs/heads/master@{#17128}
> > Committed:
https://chromium.googlesource.com/external/webrtc/+/822638b48111800434d7d4be6...
> 
> TBR=pthatcher@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:6424
> 
> Review-Url: https://codereview.webrtc.org/2742743002
> Cr-Commit-Position: refs/heads/master@{#17130}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/d6652076011363ab329d5cc46...

TBR=pthatcher@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6424
==========

to

==========
Reland of Delete cryptstring.h and cryptstring.cc. (patchset #1 id:1 of
https://codereview.webrtc.org/2742743002/ )

Reason for revert:
CryptString usage is now deleted in Chrome, see cl
https://codereview.chromium.org/2738973004/

Original issue's description:
> Revert of Delete cryptstring.h and cryptstring.cc. (patchset #1 id:1 of
https://codereview.webrtc.org/2740633003/ )
> 
> Reason for revert:
> It turns out cryptstring was used by Chrome. In the xmpp code recently moved
there from webrtc.
> 
> So this code has to be moved too, it canät just be deleted.
> 
> Original issue's description:
> > Delete cryptstring.h and cryptstring.cc.
> > 
> > They became unused with cl https://codereview.webrtc.org/2731673002/
> > 
> > BUG=webrtc:6424
> > 
> > Review-Url: https://codereview.webrtc.org/2740633003
> > Cr-Commit-Position: refs/heads/master@{#17128}
> > Committed:
https://chromium.googlesource.com/external/webrtc/+/822638b48111800434d7d4be6...
> 
> TBR=pthatcher@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:6424
> 
> Review-Url: https://codereview.webrtc.org/2742743002
> Cr-Commit-Position: refs/heads/master@{#17130}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/d6652076011363ab329d5cc46...

TBR=pthatcher@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6424

Review-Url: https://codereview.webrtc.org/2745523004
Cr-Commit-Position: refs/heads/master@{#17160}
Committed:
https://chromium.googlesource.com/external/webrtc/+/05a087802b3494ec448f19172...
==========

[commit-bot: I haz the power, 2017-03-10 08:27:49]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/webrtc/+/05a087802b3494ec448f19172...