message: Reduce failure log level GpuDriver::DeviceAllocate.
  This will reduce ERROR log spam, e.g. when the BFCAllocator successfully backpedals.
diff: @@ -825,7 +825,9 @@ GpuDriver::ContextGetSharedMemConfig(GpuContext* context) {
  CUdeviceptr result = 0;
  CUresult res = cuMemAlloc(&result, bytes);
  if (res != CUDA_SUCCESS) {
  - LOG(ERROR) << "failed to allocate "
  + // LOG(INFO) because this isn't always important to users (e.g. BFCAllocator
  + // implements a retry if the first allocation fails).
  + LOG(INFO) << "failed to allocate "
  << port::HumanReadableNumBytes::ToString(bytes) << " (" << bytes
  << " bytes) from device: " << ToString(res);
  return nullptr;
  