Re-enable globals instrumentation under ASan on Mac.

Re-enable globals instrumentation under ASan on Mac.
The corresponding bug in ASan has been fixed in March 2014.

BUG=352073
TBR=earthdok@chromium.org

Committed: https://crrev.com/964445e21b60278ff6e0de560c4110d8a161be36
Cr-Commit-Position: refs/heads/master@{#307253}

[Alexander Potapenko, 2014-12-08 12:16:09]

For the record, the UAF in PinchViewportTest.TestMainFrameInitializationSizing
is unrelated and is also reported in:
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_asan_64/build...
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_asan_64/build...
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_asan_64/build...

[earthdok, 2014-12-08 13:43:55]

On 2014/12/08 12:16:09, Alexander Potapenko wrote:
> For the record, the UAF in PinchViewportTest.TestMainFrameInitializationSizing
> is unrelated and is also reported in:
>
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_asan_64/build...
>
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_asan_64/build...
>
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_asan_64/build...

You should've submitted to mac_chromium_asan_rel_ng, which ignores pre-existing
errors automagically :)

lgtm

[Alexander Potapenko, 2014-12-08 14:48:29]

The CQ bit was checked by glider@chromium.org

[commit-bot: I haz the power, 2014-12-08 14:48:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/740663003/1

[commit-bot: I haz the power, 2014-12-08 15:48:45]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-12-08 15:50:31]

Patchset 1 (id:??) landed as
https://crrev.com/964445e21b60278ff6e0de560c4110d8a161be36
Cr-Commit-Position: refs/heads/master@{#307253}