tree ec3e6fbc31d836a505ec44b2b12ff75bad3d1e7b
parent 5b44d2f3362805fb500e8715fc184f92b2e11079
author A. Unique TensorFlower <gardener@tensorflow.org> 1568223242 -0700
committer TensorFlower Gardener <gardener@tensorflow.org> 1568224780 -0700

make event.name std::string. due to CUpti_ActivityKernel4::name is not persistent.
and delay the Demangle process to serialization time because we want to reduce the overhead during profiling.

PiperOrigin-RevId: 268489643