GN build: don't use "" for grit input.

GN build: don't use "" for grit input.

If a grit target specifies a resource_ids file of "" (this has specific meaning
documented in the grit rule), don't set the empty string as an input to the
grit action.

The only time this comes up is in the java_strings_grd template.

Committed: https://crrev.com/af43f9f780b5fcca30faef007745306827d69c23
Cr-Commit-Position: refs/heads/master@{#331869}

[brettw, 2015-05-28 17:04:47]

brettw@chromium.org changed reviewers:
+ cjhopman@chromium.org

[brettw, 2015-05-28 17:04:53]

The CQ bit was checked by brettw@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-05-28 17:05:29]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1157113003/1

[commit-bot: I haz the power, 2015-05-28 17:36:58]

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

[commit-bot: I haz the power, 2015-05-28 17:36:59]

Dry run: This issue passed the CQ dry run.

[cjhopman, 2015-05-28 18:40:44]

lgtm

https://codereview.chromium.org/1157113003/diff/1/build/secondary/tools/grit/...
File build/secondary/tools/grit/grit_rule.gni (right):

https://codereview.chromium.org/1157113003/diff/1/build/secondary/tools/grit/...
build/secondary/tools/grit/grit_rule.gni:317: # Script depends on ID file. Don't
depend on "" if it's the empty string.
s/on "" if/on resource_ids if/ ? Sentence is kinda odd as is.

[brettw, 2015-05-28 21:54:47]

The CQ bit was checked by brettw@chromium.org

[brettw, 2015-05-28 21:54:47]

The patchset sent to the CQ was uploaded after l-g-t-m from
cjhopman@chromium.org
Link to the patchset: https://codereview.chromium.org/1157113003/#ps20001
(title: " ")

[commit-bot: I haz the power, 2015-05-28 21:55:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1157113003/20001

[commit-bot: I haz the power, 2015-05-28 22:28:44]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-05-28 22:29:22]

Patchset 2 (id:??) landed as
https://crrev.com/af43f9f780b5fcca30faef007745306827d69c23
Cr-Commit-Position: refs/heads/master@{#331869}