message: A small fix to the GPUProcessState method in which instance_ was not being set. As a result, the singleton wasn't truly a singleton and 2 objects ended up getting created over the lifetime.
diff: @@ -68,6 +68,7 @@ GPUProcessState* GPUProcessState::instance_ = nullptr;
  GPUProcessState::GPUProcessState() : gpu_device_enabled_(false) {
  CHECK(instance_ == nullptr);
  + instance_ = this;
  process_state_ = ProcessState::singleton();
  }
  