Revert of Remove download_binaries.py from DEPS

Revert of Remove download_binaries.py from DEPS (patchset #2 id:20001 of https://codereview.chromium.org/2774043002/ )

Reason for revert:
https://codereview.chromium.org/2775913002/ needs to be reverted, so reverting all dependent patch sets

Original issue's description:
> Remove download_binaries.py from DEPS
> 
> This step is no longer necessary after https://codereview.chromium.org/2775913002/
> 
> BUG=chromium:705072
> 
> Review-Url: https://codereview.chromium.org/2774043002
> Cr-Commit-Position: refs/heads/master@{#44252}
> Committed: https://chromium.googlesource.com/v8/v8/+/459b881c233557f5da9ca9e4779fc1696c785a1c

TBR=machenbach@chromium.org,thomasanderson@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:705072
Review-Url: https://codereview.chromium.org/2786173004
Cr-Commit-Position: refs/heads/master@{#44289}
Committed: https://chromium.googlesource.com/v8/v8/+/3b72184d40abde9c70149783189eb77c7438dc4f

[Tom Anderson, 2017-03-31 00:29:21]

The CQ bit was checked by thomasanderson@chromium.org

[Tom Anderson, 2017-03-31 00:29:21]

Created Revert of Remove download_binaries.py from DEPS

[commit-bot: I haz the power, 2017-03-31 00:29:25]

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, 2017-03-31 00:29:26]

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

[commit-bot: I haz the power, 2017-03-31 00:29:27]

No L-G-T-M from a valid reviewer yet.
CQ run can only be started once the patch has received an L-G-T-M from a full
committer.
Even if an L-G-T-M may have been provided, it was from a non-committer,_not_ a
full super star committer.
Committers are members of the group "project-v8-committers".
Note that this has nothing to do with OWNERS files.

[Michael Achenbach, 2017-03-31 06:31:47]

The CQ bit was checked by machenbach@chromium.org

[Michael Achenbach, 2017-03-31 06:31:47]

lgtm

[commit-bot: I haz the power, 2017-03-31 06:31:59]

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, 2017-03-31 07:33:58]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490941907085120, "parent_rev":
"776d89f9ce6e043972c1e611aa8cfaf2feb1fb78", "commit_rev":
"3b72184d40abde9c70149783189eb77c7438dc4f"}

[commit-bot: I haz the power, 2017-03-31 07:34:04]

Description was changed from

==========
Revert of Remove download_binaries.py from DEPS (patchset #2 id:20001 of
https://codereview.chromium.org/2774043002/ )

Reason for revert:
https://codereview.chromium.org/2775913002/ needs to be reverted, so reverting
all dependent patch sets

Original issue's description:
> Remove download_binaries.py from DEPS
> 
> This step is no longer necessary after
https://codereview.chromium.org/2775913002/
> 
> BUG=chromium:705072
> 
> Review-Url: https://codereview.chromium.org/2774043002
> Cr-Commit-Position: refs/heads/master@{#44252}
> Committed:
https://chromium.googlesource.com/v8/v8/+/459b881c233557f5da9ca9e4779fc1696c7...

TBR=machenbach@chromium.org,thomasanderson@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:705072
==========

to

==========
Revert of Remove download_binaries.py from DEPS (patchset #2 id:20001 of
https://codereview.chromium.org/2774043002/ )

Reason for revert:
https://codereview.chromium.org/2775913002/ needs to be reverted, so reverting
all dependent patch sets

Original issue's description:
> Remove download_binaries.py from DEPS
> 
> This step is no longer necessary after
https://codereview.chromium.org/2775913002/
> 
> BUG=chromium:705072
> 
> Review-Url: https://codereview.chromium.org/2774043002
> Cr-Commit-Position: refs/heads/master@{#44252}
> Committed:
https://chromium.googlesource.com/v8/v8/+/459b881c233557f5da9ca9e4779fc1696c7...

TBR=machenbach@chromium.org,thomasanderson@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:705072

Review-Url: https://codereview.chromium.org/2786173004
Cr-Commit-Position: refs/heads/master@{#44289}
Committed:
https://chromium.googlesource.com/v8/v8/+/3b72184d40abde9c70149783189eb77c743...
==========

[commit-bot: I haz the power, 2017-03-31 07:34:04]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/3b72184d40abde9c70149783189eb77c743...