Ensure V8 snapshot files are present when chromoting_integration_tests runs.

Ensure natives_blob.bin and snapshot_blob.bin are present when running chromoting_integration_tests with isolate.py.

BUG=421063, 436892
Committed: https://crrev.com/eaf6a0379031a3af5e86812a2e9ce125746278e1
Cr-Commit-Position: refs/heads/master@{#305945}

[baixo1, 2014-11-26 19:35:27]

The CQ bit was checked by baixo@google.com

[commit-bot: I haz the power, 2014-11-26 19:36:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/760943002/1

[commit-bot: I haz the power, 2014-11-26 19:36:16]

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

[commit-bot: I haz the power, 2014-11-26 19:36:17]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[baixo1, 2014-11-26 19:37:18]

baixo@google.com changed reviewers:
+ anandc@chromium.org, rmcilroy@chromium.org

[baixo1, 2014-11-26 19:37:19]

+anandc and rmcilroy

[anandc, 2014-11-27 00:29:29]

anandc@chromium.org changed reviewers:
+ jamiewalch@chromium.org

[anandc, 2014-11-27 00:29:29]

This LGTM.

However, I don't have committer privileges.

I tested this patch locally, and it fixes the browser-test failure we had on the
Chromoting waterfall.

Adding jamiewalch@ to reviewers.

Thanks.

[Jamie, 2014-11-27 00:34:09]

lgtm

[Jamie, 2014-11-27 00:34:16]

The CQ bit was checked by jamiewalch@chromium.org

[commit-bot: I haz the power, 2014-11-27 00:35:06]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/760943002/1

[commit-bot: I haz the power, 2014-11-27 02:12:15]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-27 02:12:57]

Patchset 1 (id:??) landed as
https://crrev.com/eaf6a0379031a3af5e86812a2e9ce125746278e1
Cr-Commit-Position: refs/heads/master@{#305945}