Include the MSan interface header in base/compiler_specific.h.

Include the MSan interface header in base/compiler_specific.h.

Since that header is now available in Chrome, we can include it instead of
re-defining the interface. Also, the definition of __msan_unpoison() in
base/compiler_specific.h conflicted with the definition in
sanitizer/msan_interface.h, preventing us from including the interface header
anywhere (e.g. during debugging).

BUG=178409
R=eugenis@chromium.org, mark@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=248555

[earthdok, 2014-02-03 15:08:37]

ptal

[eugenis, 2014-02-03 15:36:03]

lgtm

[earthdok, 2014-02-03 16:01:18]

Mark, PTAL

[Mark Mentovai, 2014-02-03 16:49:06]

LGTM

[earthdok, 2014-02-03 16:51:46]

The CQ bit was checked by earthdok@chromium.org

[commit-bot: I haz the power, 2014-02-03 16:52:07]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/earthdok@chromium.org/132913011/1

[commit-bot: I haz the power, 2014-02-03 19:51:22]

Change committed as 248555

[commit-bot: I haz the power, 2014-02-03 19:51:28]

CQ bit was unchecked on CL. Ignoring.

[commit-bot: I haz the power, 2014-02-03 19:51:28]

CQ bit was unchecked on CL. Ignoring.