[arm64] Fix a string test in StringCompareStub.

[arm64] Fix a string test in StringCompareStub.

This fixes a regression in Octane's pdf.js after r30818. The bug itself
has been present for a long time, but StringCompareStub wasn't actually
used until r30818 so it went unnoticed.

Committed: https://crrev.com/1d9d7821ff792b5d64f6521bf25a19b47067d377
Cr-Commit-Position: refs/heads/master@{#31227}

[jbramley, 2015-10-12 14:15:42]

jacob.bramley@arm.com changed reviewers:
+ bmeurer@chromium.org, jarin@chromium.org, ulan@chromium.org

[jbramley, 2015-10-12 14:16:19]

https://codereview.chromium.org/1399983002/diff/1/src/arm64/macro-assembler-a...
File src/arm64/macro-assembler-arm64.cc (right):

https://codereview.chromium.org/1399983002/diff/1/src/arm64/macro-assembler-a...
src/arm64/macro-assembler-arm64.cc:2429: const int kFlatOneByteStringTag =
Note that I removed `static` only for consistency with surrounding functions and
the other back-ends.

[Benedikt Meurer, 2015-10-12 17:51:33]

LGTM. Thanks for fixing.

[jbramley, 2015-10-13 08:15:41]

The CQ bit was checked by jacob.bramley@arm.com

[commit-bot: I haz the power, 2015-10-13 08:15:46]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1399983002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1399983002/1

[commit-bot: I haz the power, 2015-10-13 08:40:39]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-13 08:40:50]

Patchset 1 (id:??) landed as
https://crrev.com/1d9d7821ff792b5d64f6521bf25a19b47067d377
Cr-Commit-Position: refs/heads/master@{#31227}