Make `gn refs` look at script files.

Make `gn refs` look at script files.

Currently, `gn refs` would not look at the script files listed in
action() and action_foreach() targets, so, for example
`gn refs out/Default //tools/grit/grit.py` would return no references.
This (a) is obviously incorrect, and (b) meant that analyze would
not handle this case correctly and compiles would get skipped as a result.

R=brettw@chromium.org
BUG=627667
Committed: https://crrev.com/aca08753b705ef13f334c9f0aee6d44c217e4ad6
Cr-Commit-Position: refs/heads/master@{#406368}

[brettw, 2016-07-19 19:26:32]

lgtm

[Dirk Pranke, 2016-07-19 19:44:04]

The CQ bit was checked by dpranke@chromium.org

[commit-bot: I haz the power, 2016-07-19 19:44:49]

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, 2016-07-19 20:23:53]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-19 20:26:32]

Description was changed from

==========
Make `gn refs` look at script files.

Currently, `gn refs` would not look at the script files listed in
action() and action_foreach() targets, so, for example
`gn refs out/Default //tools/grit/grit.py` would return no references.
This (a) is obviously incorrect, and (b) meant that analyze would
not handle this case correctly and compiles would get skipped as a result.

R=brettw@chromium.org
BUG=627667
==========

to

==========
Make `gn refs` look at script files.

Currently, `gn refs` would not look at the script files listed in
action() and action_foreach() targets, so, for example
`gn refs out/Default //tools/grit/grit.py` would return no references.
This (a) is obviously incorrect, and (b) meant that analyze would
not handle this case correctly and compiles would get skipped as a result.

R=brettw@chromium.org
BUG=627667

Committed: https://crrev.com/aca08753b705ef13f334c9f0aee6d44c217e4ad6
Cr-Commit-Position: refs/heads/master@{#406368}
==========

[commit-bot: I haz the power, 2016-07-19 20:26:33]

Patchset 1 (id:??) landed as
https://crrev.com/aca08753b705ef13f334c9f0aee6d44c217e4ad6
Cr-Commit-Position: refs/heads/master@{#406368}