Fix SK_API macro in SkTraceMemoryDump_Chrome

Fix SK_API macro in SkTraceMemoryDump_Chrome

Add the missing macro for export.

TBR=reed@google.com

Committed: https://crrev.com/f940fe3186a24d2abdbbf469a6e7ee66161f55ce
Cr-Commit-Position: refs/heads/master@{#351618}

[ssid, 2015-09-30 17:21:06]

Patchset #1 (id:1) has been deleted

[ssid, 2015-09-30 17:21:44]

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

[commit-bot: I haz the power, 2015-09-30 17:22:27]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1379863002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1379863002/20001

[Primiano Tucci (use gerrit), 2015-09-30 17:30:14]

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

[Primiano Tucci (use gerrit), 2015-09-30 17:30:15]

lgtm

[commit-bot: I haz the power, 2015-09-30 18:40:47]

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

[commit-bot: I haz the power, 2015-09-30 18:40:48]

Dry run: This issue passed the CQ dry run.

[ssid, 2015-09-30 19:05:57]

The CQ bit was checked by ssid@chromium.org

[commit-bot: I haz the power, 2015-09-30 19:08:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1379863002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1379863002/20001

[commit-bot: I haz the power, 2015-09-30 19:36:05]

Committed patchset #1 (id:20001)

[commit-bot: I haz the power, 2015-09-30 19:37:06]

Patchset 1 (id:??) landed as
https://crrev.com/f940fe3186a24d2abdbbf469a6e7ee66161f55ce
Cr-Commit-Position: refs/heads/master@{#351618}