Add logs to debug a flakiness on GPU Mac bots.

Add logs to debug a flakiness on GPU Mac bots.

This is temporary and will be removed after we pin down the issue.

BUG=424024
TEST=
R=kbr@chromium.org
TBR=dgozman@chromium.org
NOTRY=true

Committed: https://crrev.com/16aa242c3456dc68cd91ef2c683158799c8441b0
Cr-Commit-Position: refs/heads/master@{#302371}

[Zhenyao Mo, 2014-10-31 23:29:58]

PTAL

[Ken Russell (switch to Gerrit), 2014-10-31 23:39:43]

kbr@chromium.org changed reviewers:
+ pfeldman@chromium.org, yurys@chromium.org

[Ken Russell (switch to Gerrit), 2014-10-31 23:39:44]

+more content/browser/devtools OWNERS

LGTM so long as it's been determined that these VLOGs can actually be seen in
the scenario we're facing, where the browser crashes while running under
Telemetry. Let's not add this code unless we're sure we can see the output.

https://codereview.chromium.org/684423005/diff/1/content/browser/devtools/dev...
File content/browser/devtools/devtools_system_info_handler.cc (right):

https://codereview.chromium.org/684423005/diff/1/content/browser/devtools/dev...
content/browser/devtools/devtools_system_info_handler.cc:104: VLOG(2) <<
"DevToolsSystemInfoHanler::OnGetInfo() : BEGIN";
Typo: Handler. Here and below.

[Zhenyao Mo, 2014-11-01 00:57:52]

Verified, in crash, we are able to see the added logs.  Landing this with fixed
typo.

[Zhenyao Mo, 2014-11-01 00:57:56]

The CQ bit was checked by zmo@chromium.org

[commit-bot: I haz the power, 2014-11-01 00:59:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/684423005/20001

[commit-bot: I haz the power, 2014-11-01 01:00:30]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2014-11-01 01:01:50]

Patchset 2 (id:??) landed as
https://crrev.com/16aa242c3456dc68cd91ef2c683158799c8441b0
Cr-Commit-Position: refs/heads/master@{#302371}

[Zhenyao Mo, 2014-11-01 16:21:46]

A revert of this CL (patchset #2 id:20001) has been created in
https://codereview.chromium.org/684253003/ by zmo@chromium.org.

The reason for reverting is: Should turn on logging in telemetry_gpu_tests in
general..

[Zhenyao Mo, 2014-11-04 21:14:24]

A revert of this CL (patchset #2 id:20001) has been created in
https://codereview.chromium.org/698353002/ by zmo@chromium.org.

The reason for reverting is: It was temporary and no longer needed..