Add wrapper script for computing n-grams from SKPs on Cluster Telemetry

Add wrapper script for computing n-grams from SKPs on Cluster Telemetry

Add --n argument

BUG=skia:3840
Committed: https://skia.googlesource.com/skia/+/3691e669ae77fd3d0445d4cbe9f3308e5eb9fb85

[borenet, 2015-06-30 13:48:44]

borenet@google.com changed reviewers:
+ rmistry@google.com

[rmistry, 2015-06-30 17:05:13]

lgtm

https://codereview.chromium.org/1216073007/diff/20001/tools/lua/find_ngrams_o...
File tools/lua/find_ngrams_on_ct (right):

https://codereview.chromium.org/1216073007/diff/20001/tools/lua/find_ngrams_o...
tools/lua/find_ngrams_on_ct:43: tmp_script.close()
Move the close into the finally?

[borenet, 2015-06-30 17:16:02]

https://codereview.chromium.org/1216073007/diff/20001/tools/lua/find_ngrams_o...
File tools/lua/find_ngrams_on_ct (right):

https://codereview.chromium.org/1216073007/diff/20001/tools/lua/find_ngrams_o...
tools/lua/find_ngrams_on_ct:43: tmp_script.close()
On 2015/06/30 17:05:12, rmistry wrote:
> Move the close into the finally?

Doesn't matter for Unix, but on Windows we won't be able to open the file in
trigger_ct_lua if it's still open in this script.

[borenet, 2015-06-30 17:16:34]

The CQ bit was checked by borenet@google.com

[commit-bot: I haz the power, 2015-06-30 17:16:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1216073007/20001

[commit-bot: I haz the power, 2015-06-30 17:24:07]

Committed patchset #2 (id:20001) as
https://skia.googlesource.com/skia/+/3691e669ae77fd3d0445d4cbe9f3308e5eb9fb85