Add absl::StatusCodeToStringView.

PiperOrigin-RevId: 833435432
Change-Id: Id3d01c51765bb55bcee9bae4c7d879530b395c34

Author: Abseil Team

absl/status/status.cc

@@ -47,6 +47,10 @@ static_assert(
     "absl::Status assumes it can use the bottom 2 bits of a StatusRep*.");
 
 std::string StatusCodeToString(StatusCode code) {
+  return std::string(absl::StatusCodeToStringView(code));
+}
+
+absl::string_view StatusCodeToStringView(StatusCode code) {
   switch (code) {
     case StatusCode::kOk:
       return "OK";

absl/status/status.h

@@ -284,6 +284,11 @@ enum class StatusCode : int {
 // Returns the name for the status code, or "" if it is an unknown value.
 std::string StatusCodeToString(StatusCode code);
 
+// StatusCodeToStringView()
+//
+// Same as StatusCodeToString(), but returns a string_view.
+absl::string_view StatusCodeToStringView(StatusCode code);
+
 // operator<<
 //
 // Streams StatusCodeToString(code) to `os`.

absl/status/status_test.cc

@@ -39,6 +39,7 @@ TEST(StatusCode, InsertionOperator) {
   std::ostringstream oss;
   oss << code;
   EXPECT_EQ(oss.str(), absl::StatusCodeToString(code));
+  EXPECT_EQ(oss.str(), absl::StatusCodeToStringView(code));
 }
 
 // This structure holds the details for testing a single error code,