Fix -Wsign-compare in l10n_string_util_unittest.cc

Fix -Wsign-compare in l10n_string_util_unittest.cc

Clang builds were failing with:

C:\b\c\b\ClangToTWin\src\testing\gtest\include\gtest\gtest.h(1392,16):
error: comparison of integers of different signs: 'const int' and
'const unsigned int' [-Werror,-Wsign-compare]
  if (expected == actual) {
      ~~~~~~~~ ^  ~~~~~~

BUG=708178
TBR=grt

Review-Url: https://codereview.chromium.org/2794183004
Cr-Commit-Position: refs/heads/master@{#461742}
Committed: https://chromium.googlesource.com/chromium/src/+/77b4b28f7866f526a13426dd5c5ca2e8f0156c7a

[hans, 2017-04-04 16:10:56]

tbr'ing to unbreak all win-clang buildbots

[hans, 2017-04-04 16:11:01]

The CQ bit was checked by hans@chromium.org

[commit-bot: I haz the power, 2017-04-04 16:11:29]

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, 2017-04-04 16:28:04]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1491322261749570, "parent_rev":
"43c00b6dfca02767efa66d7fb110c7cbf28bc019", "commit_rev":
"77b4b28f7866f526a13426dd5c5ca2e8f0156c7a"}

[commit-bot: I haz the power, 2017-04-04 16:29:23]

Description was changed from

==========
Fix -Wsign-compare in l10n_string_util_unittest.cc

Clang builds were failing with:

C:\b\c\b\ClangToTWin\src\testing\gtest\include\gtest\gtest.h(1392,16):
error: comparison of integers of different signs: 'const int' and
'const unsigned int' [-Werror,-Wsign-compare]
  if (expected == actual) {
      ~~~~~~~~ ^  ~~~~~~

BUG=708178
TBR=grt
==========

to

==========
Fix -Wsign-compare in l10n_string_util_unittest.cc

Clang builds were failing with:

C:\b\c\b\ClangToTWin\src\testing\gtest\include\gtest\gtest.h(1392,16):
error: comparison of integers of different signs: 'const int' and
'const unsigned int' [-Werror,-Wsign-compare]
  if (expected == actual) {
      ~~~~~~~~ ^  ~~~~~~

BUG=708178
TBR=grt

Review-Url: https://codereview.chromium.org/2794183004
Cr-Commit-Position: refs/heads/master@{#461742}
Committed:
https://chromium.googlesource.com/chromium/src/+/77b4b28f7866f526a13426dd5c5c...
==========

[commit-bot: I haz the power, 2017-04-04 16:29:24]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/77b4b28f7866f526a13426dd5c5c...

[grt (UTC plus 2), 2017-04-05 07:32:06]

grt@chromium.org changed reviewers:
+ grt@chromium.org

[grt (UTC plus 2), 2017-04-05 07:32:07]

lgtm, thanks.