Both std::tr1::unordered_set and std::unordered_set are not allowed in

Both std::tr1::unordered_set and std::unordered_set are not allowed in
Google at this moment.  This change is implementing a workaround that
allows switching to hash_set and hash_map.

R=mark@chromium.org

Committed: https://code.google.com/p/google-breakpad/source/detail?r=1354

[Mark Mentovai]

LGTM

https://breakpad.appspot.com/6694002/diff/1/src/common/unordered.h
File src/common/unordered.h (right):

https://breakpad.appspot.com/6694002/diff/1/src/common/unordered.h#newcode50
src/common/unordered.h:50: #include <unordered_map>
We should be able to use this directly with libstdc++ too, as long as the
libstdc++ version indicates C++11 support. Unfortunately, detecting that is a
little tricky, and at least for now, libstdc++ always has std::tr1.

[ivanpe]

Committing shortly.  Thanks.

https://breakpad.appspot.com/6694002/diff/1/src/common/unordered.h
File src/common/unordered.h (right):

https://breakpad.appspot.com/6694002/diff/1/src/common/unordered.h#newcode50
src/common/unordered.h:50: #include <unordered_map>
On 2014/07/21 16:21:17, Mark Mentovai wrote:
> We should be able to use this directly with libstdc++ too, as long as the
> libstdc++ version indicates C++11 support. Unfortunately, detecting that is a
> little tricky, and at least for now, libstdc++ always has std::tr1.

Acknowledged.

[ivanpe]

Committed patchset #1 manually as r1354 (presubmit successful).