Removed redundant std::string -> string conversions.

PiperOrigin-RevId: 210596417

2 files changed, 7 insertions, 7 deletions

diff --git a/tensorflow/core/debug/debug_graph_utils.cc b/tensorflow/core/debug/debug_graph_utils.cc
index 7641edea52..5fc95a8f20 100644
--- a/tensorflow/core/debug/debug_graph_utils.cc
+++ b/tensorflow/core/debug/debug_graph_utils.cc
@@ -356,8 +356,8 @@ Status DebugNodeInserter::ParseDebugOpName(
             "Malformed attributes in debug op name \"", debug_op_name, "\"");
       }
 
-      const string key = std::string(seg.substr(0, eq_index));
-      const string value = std::string(
+      const string key(seg.substr(0, eq_index));
+      const string value(
           seg.substr(eq_index + 1, attribute_seg.size() - eq_index - 1));
       if (key.empty() || value.empty()) {
         return errors::InvalidArgument(
diff --git a/tensorflow/core/debug/debug_io_utils.cc b/tensorflow/core/debug/debug_io_utils.cc
index 9e8002d490..949d034dea 100644
--- a/tensorflow/core/debug/debug_io_utils.cc
+++ b/tensorflow/core/debug/debug_io_utils.cc
@@ -399,8 +399,8 @@ Status DebugIO::PublishDebugMetadata(
                               strings::Printf("%.14lld", session_run_index))),
           Env::Default()->NowMicros());
       status.Update(DebugFileIO::DumpEventProtoToFile(
-          event, std::string(io::Dirname(core_metadata_path)),
-          std::string(io::Basename(core_metadata_path))));
+          event, string(io::Dirname(core_metadata_path)),
+          string(io::Basename(core_metadata_path))));
     }
   }
 
@@ -632,8 +632,8 @@ Status DebugFileIO::DumpTensorToEventFile(const DebugNodeKey& debug_node_key,
   std::vector<Event> events;
   TF_RETURN_IF_ERROR(
       WrapTensorAsEvents(debug_node_key, tensor, wall_time_us, 0, &events));
-  return DumpEventProtoToFile(events[0], std::string(io::Dirname(file_path)),
-                              std::string(io::Basename(file_path)));
+  return DumpEventProtoToFile(events[0], string(io::Dirname(file_path)),
+                              string(io::Basename(file_path)));
 }
 
 Status DebugFileIO::RecursiveCreateDir(Env* env, const string& dir) {
@@ -642,7 +642,7 @@ Status DebugFileIO::RecursiveCreateDir(Env* env, const string& dir) {
     return Status::OK();
   }
 
-  string parent_dir = std::string(io::Dirname(dir));
+  string parent_dir(io::Dirname(dir));
   if (!env->FileExists(parent_dir).ok()) {
     // The parent path does not exist yet, create it first.
     Status s = RecursiveCreateDir(env, parent_dir);  // Recursive call