message: Update GraphDef version to 677.
diff: @@ -108,7 +108,7 @@ limitations under the License.
  #define TF_GRAPH_DEF_VERSION_MIN_PRODUCER 0
  #define TF_GRAPH_DEF_VERSION_MIN_CONSUMER 0
  -#define TF_GRAPH_DEF_VERSION 676 // Updated: 2021/2/13
  +#define TF_GRAPH_DEF_VERSION 677 // Updated: 2021/2/14
  // Checkpoint compatibility versions (the versions field in SavedSliceMeta).
  //
  