Revert of Add a script to merge the PGC files

Revert of Add a script to merge the PGC files (patchset #6 id:120001 of https://codereview.chromium.org/2575543002/ )

Reason for revert:
Breaks the PGO bots.

Original issue's description:
> Add a script to merge the PGC files.
> 
> Workaround for a flakyness in pgomgr.exe where it can run out of address
> space while trying to merge all the PGC files at the same time.
> 
> This will also allow to upload the pgd file before running the optimize step.
> 
> BUG=674956
> 
> Review-Url: https://codereview.chromium.org/2575543002
> Cr-Commit-Position: refs/heads/master@{#448332}
> Committed: https://chromium.googlesource.com/chromium/src/+/6c18b1e861ec6a9c96d24b3bd962688e50c83597

TBR=scottmg@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=674956
Review-Url: https://codereview.chromium.org/2680683002
Cr-Commit-Position: refs/heads/master@{#448561}
Committed: https://chromium.googlesource.com/chromium/src/+/6c2f8b4bd17f67d03b3e4d85401a0eaa68597afa

[Sébastien Marchand, 2017-02-07 06:10:17]

The CQ bit was checked by sebmarchand@chromium.org

[Sébastien Marchand, 2017-02-07 06:10:17]

Created Revert of Add a script to merge the PGC files

[commit-bot: I haz the power, 2017-02-07 06:10:30]

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

[commit-bot: I haz the power, 2017-02-07 06:11:07]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1486447817318870, "parent_rev":
"6912f44b9b14ce52173aa5a8b0afb320a19ca91b", "commit_rev":
"6c2f8b4bd17f67d03b3e4d85401a0eaa68597afa"}

[commit-bot: I haz the power, 2017-02-07 06:12:02]

Description was changed from

==========
Revert of Add a script to merge the PGC files (patchset #6 id:120001 of
https://codereview.chromium.org/2575543002/ )

Reason for revert:
Breaks the PGO bots.

Original issue's description:
> Add a script to merge the PGC files.
> 
> Workaround for a flakyness in pgomgr.exe where it can run out of address
> space while trying to merge all the PGC files at the same time.
> 
> This will also allow to upload the pgd file before running the optimize step.
> 
> BUG=674956
> 
> Review-Url: https://codereview.chromium.org/2575543002
> Cr-Commit-Position: refs/heads/master@{#448332}
> Committed:
https://chromium.googlesource.com/chromium/src/+/6c18b1e861ec6a9c96d24b3bd962...

TBR=scottmg@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=674956
==========

to

==========
Revert of Add a script to merge the PGC files (patchset #6 id:120001 of
https://codereview.chromium.org/2575543002/ )

Reason for revert:
Breaks the PGO bots.

Original issue's description:
> Add a script to merge the PGC files.
> 
> Workaround for a flakyness in pgomgr.exe where it can run out of address
> space while trying to merge all the PGC files at the same time.
> 
> This will also allow to upload the pgd file before running the optimize step.
> 
> BUG=674956
> 
> Review-Url: https://codereview.chromium.org/2575543002
> Cr-Commit-Position: refs/heads/master@{#448332}
> Committed:
https://chromium.googlesource.com/chromium/src/+/6c18b1e861ec6a9c96d24b3bd962...

TBR=scottmg@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=674956

Review-Url: https://codereview.chromium.org/2680683002
Cr-Commit-Position: refs/heads/master@{#448561}
Committed:
https://chromium.googlesource.com/chromium/src/+/6c2f8b4bd17f67d03b3e4d85401a...
==========

[commit-bot: I haz the power, 2017-02-07 06:12:03]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/6c2f8b4bd17f67d03b3e4d85401a...