message: Removed virtual for Compile, so as method generic.
diff: @@ -98,7 +98,7 @@ class GPUOperation {
  return GetBestWorkGroup(params, kernel_, grid_size_, &work_group_size_);
  }
  - virtual absl::Status Compile(const CreationContext& creation_context);
  + absl::Status Compile(const CreationContext& creation_context);
  virtual absl::Status PostCompileCheck(const DeviceInfo& device_info) {
  return absl::OkStatus();
  