[XLA] gtl::optional->absl::optional

PiperOrigin-RevId: 209686671

1 files changed, 2 insertions, 3 deletions

diff --git a/tensorflow/compiler/xla/service/hlo_module_group_metadata.cc b/tensorflow/compiler/xla/service/hlo_module_group_metadata.cc
index beb4c4fb8a..f52a37bc74 100644
--- a/tensorflow/compiler/xla/service/hlo_module_group_metadata.cc
+++ b/tensorflow/compiler/xla/service/hlo_module_group_metadata.cc
@@ -271,15 +271,14 @@ int64 HloModuleGroupMetadata::GetModuleId(const HloModule* module) const {
   LOG(FATAL) << "unknown module";
 }
 
-tensorflow::gtl::optional<int64> HloModuleGroupMetadata::GetInstructionDevice(
+absl::optional<int64> HloModuleGroupMetadata::GetInstructionDevice(
     const HloInstruction& instruction) const {
   // The module group metadata can be created in both "single module, multiple
   // devices" and "multiple modules, no explicit devices" fashions.
   // The API returns an optional even though the current implementation always
   // returns a device, to account for cases where we cannot guess a device.
   // In such cases the VerifyChannelInstructions() will return proper errors.
-  tensorflow::gtl::optional<int64> device =
-      instruction.sharding_unique_device();
+  absl::optional<int64> device = instruction.sharding_unique_device();
   if (!device) {
     device = GetModuleId(instruction.parent()->parent());
   }