Logging ExternalCache cannot find external_crx /var/cache/external_cache/

Logging ExternalCache cannot find external_crx /var/cache/external_cache/

BUG=467241
Changed LOG to DLOG

Committed: https://crrev.com/33fbac51309c0c76e929acbc9e33df2c97dc23cb
Cr-Commit-Position: refs/heads/master@{#332947}

[mozartalouis, 2015-06-03 00:22:30]

mozartalouis@google.com changed reviewers:
+ oshima@chromium.org

[mozartalouis, 2015-06-04 21:49:34]

Ready for Review

[oshima, 2015-06-04 21:51:51]

lgtm

[oshima, 2015-06-04 21:52:49]

The CQ bit was checked by oshima@chromium.org

[commit-bot: I haz the power, 2015-06-04 21:53:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1160253005/1

[commit-bot: I haz the power, 2015-06-04 22:05:12]

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

[commit-bot: I haz the power, 2015-06-04 22:05:13]

Try jobs failed on following builders:
  android_chromium_gn_compile_rel on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromiu...)

[oshima, 2015-06-04 22:35:30]

The CQ bit was checked by oshima@chromium.org

[commit-bot: I haz the power, 2015-06-04 22:39:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1160253005/1

[commit-bot: I haz the power, 2015-06-04 22:46:39]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-04 22:48:33]

Patchset 1 (id:??) landed as
https://crrev.com/33fbac51309c0c76e929acbc9e33df2c97dc23cb
Cr-Commit-Position: refs/heads/master@{#332947}