Add luci-go's isolate tool, downloaded via runhooks.

Add luci-go's isolate tool, downloaded via runhooks.

R=vadimsh@chromium.org
BUG=

Committed: https://crrev.com/4fbba012ab94bf81393095e6e3a55a6134c4957d
Cr-Commit-Position: refs/heads/master@{#331184}

[Vadim Sh., 2015-05-22 19:24:06]

lgtm with suggestion

https://codereview.chromium.org/1154633003/diff/1/.gitignore
File .gitignore (right):

https://codereview.chromium.org/1154633003/diff/1/.gitignore#newcode258
.gitignore:258: /tools/luci-go/win64/isolate
isolate.exe

https://codereview.chromium.org/1154633003/diff/1/DEPS
File DEPS (right):

https://codereview.chromium.org/1154633003/diff/1/DEPS#newcode692
DEPS:692: '-d', 'src/tools/luci-go/linux64',
how about moving "64" part to the file name instead? 

When (and if) we need 32 bit, we can just place them as new *.sha1 and not touch
hooks again.

[M-A Ruel, 2015-05-22 19:29:09]

https://codereview.chromium.org/1154633003/diff/1/.gitignore
File .gitignore (right):

https://codereview.chromium.org/1154633003/diff/1/.gitignore#newcode258
.gitignore:258: /tools/luci-go/win64/isolate
On 2015/05/22 19:24:05, Vadim Sh. wrote:
> isolate.exe

Thanks for spotting it!

https://codereview.chromium.org/1154633003/diff/1/DEPS
File DEPS (right):

https://codereview.chromium.org/1154633003/diff/1/DEPS#newcode692
DEPS:692: '-d', 'src/tools/luci-go/linux64',
On 2015/05/22 19:24:06, Vadim Sh. wrote:
> how about moving "64" part to the file name instead? 
> 
> When (and if) we need 32 bit, we can just place them as new *.sha1 and not
touch
> hooks again.

I'd prefer not. It's easier to just change the directory name than also having
to change the executable names. It's also easier for users.

[Vadim Sh., 2015-05-22 19:30:03]

https://codereview.chromium.org/1154633003/diff/1/DEPS
File DEPS (right):

https://codereview.chromium.org/1154633003/diff/1/DEPS#newcode692
DEPS:692: '-d', 'src/tools/luci-go/linux64',
On 2015/05/22 19:29:09, M-A Ruel wrote:
> On 2015/05/22 19:24:06, Vadim Sh. wrote:
> > how about moving "64" part to the file name instead? 
> > 
> > When (and if) we need 32 bit, we can just place them as new *.sha1 and not
> touch
> > hooks again.
> 
> I'd prefer not. It's easier to just change the directory name than also having
> to change the executable names. It's also easier for users.

Okay.

[M-A Ruel, 2015-05-22 19:30:54]

The CQ bit was checked by maruel@chromium.org

[M-A Ruel, 2015-05-22 19:30:54]

The patchset sent to the CQ was uploaded after l-g-t-m from vadimsh@chromium.org
Link to the patchset: https://codereview.chromium.org/1154633003/#ps20001
(title: "fix .gitignore on windows")

[commit-bot: I haz the power, 2015-05-22 19:31:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1154633003/20001

[M-A Ruel, 2015-05-22 19:32:02]

The CQ bit was unchecked by maruel@chromium.org

[M-A Ruel, 2015-05-22 19:32:47]

On 2015/05/22 19:31:16, I haz the power - commit-bot wrote:
> CQ is trying da patch. Follow status at
>  https://chromium-cq-status.appspot.com/patch-status/1154633003/20001

I'll do a test with the command line arguments before doing a checkin. I
unchecked the CQ bit.

[M-A Ruel, 2015-05-22 20:08:43]

On 2015/05/22 19:32:47, M-A Ruel wrote:
> On 2015/05/22 19:31:16, I haz the power - commit-bot wrote:
> > CQ is trying da patch. Follow status at
> >  https://chromium-cq-status.appspot.com/patch-status/1154633003/20001
> 
> I'll do a test with the command line arguments before doing a checkin. I
> unchecked the CQ bit.

New version generates the expected json format and is confirmed to accept the
flags the way the recipe generates. Sadly the try jobs are uninformative since
isolate.py is disabled for the TS, so I'll have to watch on
http://build.chromium.org/p/chromium.swarm/waterfall

[M-A Ruel, 2015-05-22 20:08:45]

The CQ bit was checked by maruel@chromium.org

[M-A Ruel, 2015-05-22 20:08:46]

The patchset sent to the CQ was uploaded after l-g-t-m from vadimsh@chromium.org
Link to the patchset: https://codereview.chromium.org/1154633003/#ps40001
(title: "Fix support for --dump-json")

[commit-bot: I haz the power, 2015-05-22 20:09:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1154633003/40001

[commit-bot: I haz the power, 2015-05-22 21:52:40]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-05-22 21:57:00]

Patchset 3 (id:??) landed as
https://crrev.com/4fbba012ab94bf81393095e6e3a55a6134c4957d
Cr-Commit-Position: refs/heads/master@{#331184}