Replaced calls to deprecated tensorflow::StringPiece methods with their

tensorflow::str_util equivalents.

This will allow the deprecated methods to be removed.

PiperOrigin-RevId: 191627087

15 files changed, 72 insertions, 50 deletions

diff --git a/tensorflow/core/lib/strings/numbers.cc b/tensorflow/core/lib/strings/numbers.cc
index 516decc3c0..8f34baa7de 100644
--- a/tensorflow/core/lib/strings/numbers.cc
+++ b/tensorflow/core/lib/strings/numbers.cc
@@ -23,6 +23,7 @@ limitations under the License.
 #include <locale>
 #include <unordered_map>
 
+#include "tensorflow/core/lib/strings/str_util.h"
 #include "tensorflow/core/lib/strings/stringprintf.h"
 #include "tensorflow/core/platform/logging.h"
 #include "tensorflow/core/platform/macros.h"
@@ -203,7 +204,7 @@ bool safe_strto64(StringPiece str, int64* value) {
 
   int64 vlimit = kint64max;
   int sign = 1;
-  if (str.Consume("-")) {
+  if (str_util::ConsumePrefix(&str, "-")) {
     sign = -1;
     // Different limit for positive and negative integers.
     vlimit = kint64min;
@@ -265,7 +266,7 @@ bool safe_strto32(StringPiece str, int32* value) {
 
   int64 vmax = kint32max;
   int sign = 1;
-  if (str.Consume("-")) {
+  if (str_util::ConsumePrefix(&str, "-")) {
     sign = -1;
     // Different max for positive and negative integers.
     ++vmax;
diff --git a/tensorflow/core/lib/strings/ordered_code_test.cc b/tensorflow/core/lib/strings/ordered_code_test.cc
index fee8a6f93e..ede9f4d390 100644
--- a/tensorflow/core/lib/strings/ordered_code_test.cc
+++ b/tensorflow/core/lib/strings/ordered_code_test.cc
@@ -22,6 +22,7 @@ limitations under the License.
 
 #include "tensorflow/core/lib/core/stringpiece.h"
 #include "tensorflow/core/lib/random/simple_philox.h"
+#include "tensorflow/core/lib/strings/str_util.h"
 #include "tensorflow/core/platform/logging.h"
 #include "tensorflow/core/platform/test.h"
 #include "tensorflow/core/platform/test_benchmark.h"
@@ -128,7 +129,7 @@ void TestWriteAppends(T first, U second) {
   string encoded_first_only = encoded;
   OCWriteToString<U>(&encoded, second);
   EXPECT_NE(encoded, encoded_first_only);
-  EXPECT_TRUE(StringPiece(encoded).starts_with(encoded_first_only));
+  EXPECT_TRUE(str_util::StartsWith(encoded, encoded_first_only));
 }
 
 template <typename T>
diff --git a/tensorflow/core/lib/strings/scanner.h b/tensorflow/core/lib/strings/scanner.h
index d3b63357ee..c82e771368 100644
--- a/tensorflow/core/lib/strings/scanner.h
+++ b/tensorflow/core/lib/strings/scanner.h
@@ -18,6 +18,7 @@ limitations under the License.
 
 #include <string>
 #include "tensorflow/core/lib/core/stringpiece.h"
+#include "tensorflow/core/lib/strings/str_util.h"
 #include "tensorflow/core/platform/macros.h"
 
 namespace tensorflow {
@@ -75,14 +76,14 @@ class Scanner {
   // Consume the next s.size() characters of the input, if they match <s>. If
   // they don't match <s>, this is a no-op.
   Scanner& ZeroOrOneLiteral(StringPiece s) {
-    cur_.Consume(s);
+    str_util::ConsumePrefix(&cur_, s);
     return *this;
   }
 
   // Consume the next s.size() characters of the input, if they match <s>. If
   // they don't match <s>, then GetResult will ultimately return false.
   Scanner& OneLiteral(StringPiece s) {
-    if (!cur_.Consume(s)) {
+    if (!str_util::ConsumePrefix(&cur_, s)) {
       error_ = true;
     }
     return *this;
diff --git a/tensorflow/core/platform/cloud/BUILD b/tensorflow/core/platform/cloud/BUILD
index 3ee7be3c4e..be84316c48 100644
--- a/tensorflow/core/platform/cloud/BUILD
+++ b/tensorflow/core/platform/cloud/BUILD
@@ -85,6 +85,7 @@ cc_library(
         ":retrying_utils",
         ":time_util",
         "//tensorflow/core:framework_headers_lib",
+        "//tensorflow/core:lib",
         "//tensorflow/core:lib_internal",
         "@jsoncpp_git//:jsoncpp",
     ],
@@ -263,6 +264,7 @@ tf_cc_test(
     deps = [
         ":gcs_file_system",
         ":http_request_fake",
+        "//tensorflow/core:lib",
         "//tensorflow/core:test",
         "//tensorflow/core:test_main",
     ],
diff --git a/tensorflow/core/platform/cloud/gcs_file_system.cc b/tensorflow/core/platform/cloud/gcs_file_system.cc
index 1691826483..3c0dc13d75 100644
--- a/tensorflow/core/platform/cloud/gcs_file_system.cc
+++ b/tensorflow/core/platform/cloud/gcs_file_system.cc
@@ -172,7 +172,7 @@ Status ParseGcsPath(StringPiece fname, bool empty_object_ok, string* bucket,
     return errors::InvalidArgument("GCS path doesn't contain a bucket name: ",
                                    fname);
   }
-  objectp.Consume("/");
+  str_util::ConsumePrefix(&objectp, "/");
   *object = objectp.ToString();
   if (!empty_object_ok && object->empty()) {
     return errors::InvalidArgument("GCS path doesn't contain an object name: ",
@@ -535,7 +535,8 @@ class GcsWritableFile : public WritableFile {
       *uploaded = 0;
     } else {
       StringPiece range_piece(received_range);
-      range_piece.Consume("bytes=");  // May or may not be present.
+      str_util::ConsumePrefix(&range_piece,
+                              "bytes=");  // May or may not be present.
       std::vector<int64> range_parts;
       if (!str_util::SplitAndParseAsInts(range_piece, '-', &range_parts) ||
           range_parts.size() != 2) {
@@ -1172,7 +1173,7 @@ Status GcsFileSystem::GetChildrenBounded(const string& dirname,
         // 'object_prefix', which is part of 'dirname', should be removed from
         // the beginning of 'name'.
         StringPiece relative_path(name);
-        if (!relative_path.Consume(object_prefix)) {
+        if (!str_util::ConsumePrefix(&relative_path, object_prefix)) {
           return errors::Internal(strings::StrCat(
               "Unexpected response: the returned file name ", name,
               " doesn't match the prefix ", object_prefix));
@@ -1201,7 +1202,7 @@ Status GcsFileSystem::GetChildrenBounded(const string& dirname,
         }
         const string& prefix_str = prefix.asString();
         StringPiece relative_path(prefix_str);
-        if (!relative_path.Consume(object_prefix)) {
+        if (!str_util::ConsumePrefix(&relative_path, object_prefix)) {
           return errors::Internal(
               "Unexpected response: the returned folder name ", prefix_str,
               " doesn't match the prefix ", object_prefix);
diff --git a/tensorflow/core/platform/cloud/gcs_file_system_test.cc b/tensorflow/core/platform/cloud/gcs_file_system_test.cc
index 8516421614..2fbde9b6a7 100644
--- a/tensorflow/core/platform/cloud/gcs_file_system_test.cc
+++ b/tensorflow/core/platform/cloud/gcs_file_system_test.cc
@@ -16,6 +16,7 @@ limitations under the License.
 #include "tensorflow/core/platform/cloud/gcs_file_system.h"
 #include <fstream>
 #include "tensorflow/core/lib/core/status_test_util.h"
+#include "tensorflow/core/lib/strings/str_util.h"
 #include "tensorflow/core/platform/cloud/http_request_fake.h"
 #include "tensorflow/core/platform/test.h"
 
@@ -584,8 +585,9 @@ TEST(GcsFileSystemTest, NewWritableFile_ResumeUploadAllAttemptsFail) {
   TF_EXPECT_OK(file->Append("content2"));
   const auto& status = file->Close();
   EXPECT_EQ(errors::Code::ABORTED, status.code());
-  EXPECT_TRUE(StringPiece(status.error_message())
-                  .contains("All 10 retry attempts failed. The last failure: "
+  EXPECT_TRUE(
+      str_util::StrContains(status.error_message(),
+                            "All 10 retry attempts failed. The last failure: "
                             "Unavailable: important HTTP error 503"))
       << status;
 }
@@ -641,13 +643,12 @@ TEST(GcsFileSystemTest, NewWritableFile_UploadReturns410) {
   const auto& status = file->Close();
   EXPECT_EQ(errors::Code::UNAVAILABLE, status.code());
   EXPECT_TRUE(
-      StringPiece(status.error_message())
-          .contains(
-              "Upload to gs://bucket/path/writeable.txt failed, caused by: "
-              "Not found: important HTTP error 410"))
+      str_util::StrContains(status.error_message(),
+                            "Upload to gs://bucket/path/writeable.txt failed, "
+                            "caused by: Not found: important HTTP error 410"))
       << status;
-  EXPECT_TRUE(StringPiece(status.error_message())
-                  .contains("when uploading gs://bucket/path/writeable.txt"))
+  EXPECT_TRUE(str_util::StrContains(
+      status.error_message(), "when uploading gs://bucket/path/writeable.txt"))
       << status;
 }
 
diff --git a/tensorflow/core/platform/cloud/retrying_file_system_test.cc b/tensorflow/core/platform/cloud/retrying_file_system_test.cc
index d3f763bb3c..ee6886fef7 100644
--- a/tensorflow/core/platform/cloud/retrying_file_system_test.cc
+++ b/tensorflow/core/platform/cloud/retrying_file_system_test.cc
@@ -16,6 +16,7 @@ limitations under the License.
 #include "tensorflow/core/platform/cloud/retrying_file_system.h"
 #include <fstream>
 #include "tensorflow/core/lib/core/status_test_util.h"
+#include "tensorflow/core/lib/strings/str_util.h"
 #include "tensorflow/core/platform/test.h"
 
 namespace tensorflow {
@@ -245,7 +246,7 @@ TEST(RetryingFileSystemTest, NewRandomAccessFile_AllRetriesFailed) {
   char scratch[10];
   const auto& status = random_access_file->Read(0, 10, &result, scratch);
   EXPECT_TRUE(
-      StringPiece(status.error_message()).contains("Retriable error #10"))
+      str_util::StrContains(status.error_message(), "Retriable error #10"))
       << status;
 }
 
@@ -399,7 +400,7 @@ TEST(RetryingFileSystemTest, NewWritableFile_AllRetriesFailed) {
   // Use it and check the results.
   const auto& status = writable_file->Sync();
   EXPECT_TRUE(
-      StringPiece(status.error_message()).contains("Retriable error #10"))
+      str_util::StrContains(status.error_message(), "Retriable error #10"))
       << status;
 }
 
@@ -428,7 +429,7 @@ TEST(RetryingFileSystemTest, NewReadOnlyMemoryRegionFromFile_AllRetriesFailed) {
   const auto& status =
       fs.NewReadOnlyMemoryRegionFromFile("filename.txt", &result);
   EXPECT_TRUE(
-      StringPiece(status.error_message()).contains("Retriable error #10"))
+      str_util::StrContains(status.error_message(), "Retriable error #10"))
       << status;
 }
 
@@ -454,7 +455,7 @@ TEST(RetryingFileSystemTest, GetChildren_AllRetriesFailed) {
   std::vector<string> result;
   const auto& status = fs.GetChildren("gs://path", &result);
   EXPECT_TRUE(
-      StringPiece(status.error_message()).contains("Retriable error #10"))
+      str_util::StrContains(status.error_message(), "Retriable error #10"))
       << status;
 }
 
@@ -481,7 +482,7 @@ TEST(RetryingFileSystemTest, GetMatchingPaths_AllRetriesFailed) {
   std::vector<string> result;
   const auto& status = fs.GetMatchingPaths("gs://path/dir", &result);
   EXPECT_TRUE(
-      StringPiece(status.error_message()).contains("Retriable error #10"))
+      str_util::StrContains(status.error_message(), "Retriable error #10"))
       << status;
 }
 
@@ -506,7 +507,7 @@ TEST(RetryingFileSystemTest, DeleteFile_AllRetriesFailed) {
   std::vector<string> result;
   const auto& status = fs.DeleteFile("gs://path/file.txt");
   EXPECT_TRUE(
-      StringPiece(status.error_message()).contains("Retriable error #10"))
+      str_util::StrContains(status.error_message(), "Retriable error #10"))
       << status;
 }
 
@@ -531,7 +532,7 @@ TEST(RetryingFileSystemTest, CreateDir_AllRetriesFailed) {
   std::vector<string> result;
   const auto& status = fs.CreateDir("gs://path/newdir");
   EXPECT_TRUE(
-      StringPiece(status.error_message()).contains("Retriable error #10"))
+      str_util::StrContains(status.error_message(), "Retriable error #10"))
       << status;
 }
 
@@ -556,7 +557,7 @@ TEST(RetryingFileSystemTest, DeleteDir_AllRetriesFailed) {
   std::vector<string> result;
   const auto& status = fs.DeleteDir("gs://path/dir");
   EXPECT_TRUE(
-      StringPiece(status.error_message()).contains("Retriable error #10"))
+      str_util::StrContains(status.error_message(), "Retriable error #10"))
       << status;
 }
 
@@ -582,7 +583,7 @@ TEST(RetryingFileSystemTest, GetFileSize_AllRetriesFailed) {
   uint64 size;
   const auto& status = fs.GetFileSize("gs://path/file.txt", &size);
   EXPECT_TRUE(
-      StringPiece(status.error_message()).contains("Retriable error #10"))
+      str_util::StrContains(status.error_message(), "Retriable error #10"))
       << status;
 }
 
@@ -605,7 +606,7 @@ TEST(RetryingFileSystemTest, RenameFile_AllRetriesFailed) {
 
   const auto& status = fs.RenameFile("old_name", "new_name");
   EXPECT_TRUE(
-      StringPiece(status.error_message()).contains("Retriable error #10"))
+      str_util::StrContains(status.error_message(), "Retriable error #10"))
       << status;
 }
 
@@ -630,7 +631,7 @@ TEST(RetryingFileSystemTest, Stat_AllRetriesFailed) {
   FileStatistics stat;
   const auto& status = fs.Stat("file_name", &stat);
   EXPECT_TRUE(
-      StringPiece(status.error_message()).contains("Retriable error #10"))
+      str_util::StrContains(status.error_message(), "Retriable error #10"))
       << status;
 }
 
@@ -642,7 +643,7 @@ TEST(RetryingFileSystemTest, FileExists_AllRetriesFailed) {
 
   const auto& status = fs.FileExists("file_name");
   EXPECT_TRUE(
-      StringPiece(status.error_message()).contains("Retriable error #10"))
+      str_util::StrContains(status.error_message(), "Retriable error #10"))
       << status;
 }
 
@@ -677,7 +678,7 @@ TEST(RetryingFileSystemTest, IsDirectory_AllRetriesFailed) {
 
   const auto& status = fs.IsDirectory("gs://path/dir");
   EXPECT_TRUE(
-      StringPiece(status.error_message()).contains("Retriable error #10"))
+      str_util::StrContains(status.error_message(), "Retriable error #10"))
       << status;
 }
 
@@ -706,7 +707,7 @@ TEST(RetryingFileSystemTest, DeleteRecursively_AllRetriesFailed) {
   const auto& status =
       fs.DeleteRecursively("gs://path/dir", &undeleted_files, &undeleted_dirs);
   EXPECT_TRUE(
-      StringPiece(status.error_message()).contains("Retriable error #10"))
+      str_util::StrContains(status.error_message(), "Retriable error #10"))
       << status;
 }
 
diff --git a/tensorflow/core/platform/cloud/retrying_utils_test.cc b/tensorflow/core/platform/cloud/retrying_utils_test.cc
index 6eb340e094..1b6527618a 100644
--- a/tensorflow/core/platform/cloud/retrying_utils_test.cc
+++ b/tensorflow/core/platform/cloud/retrying_utils_test.cc
@@ -16,6 +16,7 @@ limitations under the License.
 #include "tensorflow/core/platform/cloud/retrying_utils.h"
 #include <fstream>
 #include "tensorflow/core/lib/core/status_test_util.h"
+#include "tensorflow/core/lib/strings/str_util.h"
 #include "tensorflow/core/platform/env.h"
 #include "tensorflow/core/platform/test.h"
 
@@ -31,10 +32,9 @@ TEST(RetryingUtilsTest, CallWithRetries_RetryDelays) {
 
   const auto& status = RetryingUtils::CallWithRetries(f, 500000L, sleep);
   EXPECT_EQ(errors::Code::ABORTED, status.code());
-  EXPECT_TRUE(StringPiece(status.error_message())
-                  .contains("All 10 retry attempts "
-                            "failed. The last failure: "
-                            "Unavailable: Failed."))
+  EXPECT_TRUE(str_util::StrContains(
+      status.error_message(),
+      "All 10 retry attempts failed. The last failure: Unavailable: Failed."))
       << status;
 
   EXPECT_EQ(10, requested_delays.size());
diff --git a/tensorflow/core/util/command_line_flags.cc b/tensorflow/core/util/command_line_flags.cc
index 3efc703faf..480ce94fca 100644
--- a/tensorflow/core/util/command_line_flags.cc
+++ b/tensorflow/core/util/command_line_flags.cc
@@ -17,6 +17,7 @@ limitations under the License.
 #include <vector>
 
 #include "tensorflow/core/lib/core/stringpiece.h"
+#include "tensorflow/core/lib/strings/str_util.h"
 #include "tensorflow/core/lib/strings/stringprintf.h"
 #include "tensorflow/core/platform/logging.h"
 #include "tensorflow/core/util/command_line_flags.h"
@@ -28,7 +29,9 @@ bool ParseStringFlag(tensorflow::StringPiece arg, tensorflow::StringPiece flag,
                      const std::function<bool(string)>& hook,
                      bool* value_parsing_ok) {
   *value_parsing_ok = true;
-  if (arg.Consume("--") && arg.Consume(flag) && arg.Consume("=")) {
+  if (str_util::ConsumePrefix(&arg, "--") &&
+      str_util::ConsumePrefix(&arg, flag) &&
+      str_util::ConsumePrefix(&arg, "=")) {
     *value_parsing_ok = hook(arg.ToString());
     return true;
   }
@@ -40,7 +43,9 @@ bool ParseInt32Flag(tensorflow::StringPiece arg, tensorflow::StringPiece flag,
                     const std::function<bool(int32)>& hook,
                     bool* value_parsing_ok) {
   *value_parsing_ok = true;
-  if (arg.Consume("--") && arg.Consume(flag) && arg.Consume("=")) {
+  if (str_util::ConsumePrefix(&arg, "--") &&
+      str_util::ConsumePrefix(&arg, flag) &&
+      str_util::ConsumePrefix(&arg, "=")) {
     char extra;
     int32 parsed_int32;
     if (sscanf(arg.data(), "%d%c", &parsed_int32, &extra) != 1) {
@@ -60,7 +65,9 @@ bool ParseInt64Flag(tensorflow::StringPiece arg, tensorflow::StringPiece flag,
                     const std::function<bool(int64)>& hook,
                     bool* value_parsing_ok) {
   *value_parsing_ok = true;
-  if (arg.Consume("--") && arg.Consume(flag) && arg.Consume("=")) {
+  if (str_util::ConsumePrefix(&arg, "--") &&
+      str_util::ConsumePrefix(&arg, flag) &&
+      str_util::ConsumePrefix(&arg, "=")) {
     char extra;
     int64 parsed_int64;
     if (sscanf(arg.data(), "%lld%c", &parsed_int64, &extra) != 1) {
@@ -80,7 +87,8 @@ bool ParseBoolFlag(tensorflow::StringPiece arg, tensorflow::StringPiece flag,
                    const std::function<bool(bool)>& hook,
                    bool* value_parsing_ok) {
   *value_parsing_ok = true;
-  if (arg.Consume("--") && arg.Consume(flag)) {
+  if (str_util::ConsumePrefix(&arg, "--") &&
+      str_util::ConsumePrefix(&arg, flag)) {
     if (arg.empty()) {
       *value_parsing_ok = hook(true);
       return true;
@@ -107,7 +115,9 @@ bool ParseFloatFlag(tensorflow::StringPiece arg, tensorflow::StringPiece flag,
                     const std::function<bool(float)>& hook,
                     bool* value_parsing_ok) {
   *value_parsing_ok = true;
-  if (arg.Consume("--") && arg.Consume(flag) && arg.Consume("=")) {
+  if (str_util::ConsumePrefix(&arg, "--") &&
+      str_util::ConsumePrefix(&arg, flag) &&
+      str_util::ConsumePrefix(&arg, "=")) {
     char extra;
     float parsed_float;
     if (sscanf(arg.data(), "%f%c", &parsed_float, &extra) != 1) {
diff --git a/tensorflow/core/util/device_name_utils_test.cc b/tensorflow/core/util/device_name_utils_test.cc
index c1bc0f3378..ff9c108f10 100644
--- a/tensorflow/core/util/device_name_utils_test.cc
+++ b/tensorflow/core/util/device_name_utils_test.cc
@@ -408,7 +408,7 @@ static void MergeDevNamesError(const string& name_a, const string& name_b,
   DeviceNameUtils::ParsedName target_a = Name(name_a);
   Status s = DeviceNameUtils::MergeDevNames(&target_a, Name(name_b));
   EXPECT_EQ(s.code(), error::INVALID_ARGUMENT);
-  EXPECT_TRUE(StringPiece(s.error_message()).contains(expected_error_substr))
+  EXPECT_TRUE(str_util::StrContains(s.error_message(), expected_error_substr))
       << s;
 }
 
diff --git a/tensorflow/core/util/equal_graph_def.cc b/tensorflow/core/util/equal_graph_def.cc
index f1ec497a67..b87dce0dff 100644
--- a/tensorflow/core/util/equal_graph_def.cc
+++ b/tensorflow/core/util/equal_graph_def.cc
@@ -23,6 +23,7 @@ limitations under the License.
 #include "tensorflow/core/framework/node_def.pb.h"
 #include "tensorflow/core/framework/node_def_util.h"
 #include "tensorflow/core/lib/hash/hash.h"
+#include "tensorflow/core/lib/strings/str_util.h"
 #include "tensorflow/core/lib/strings/strcat.h"
 #include "tensorflow/core/platform/protobuf.h"
 
@@ -144,7 +145,7 @@ bool EqualNodeDef(const NodeDef& actual, const NodeDef& expected, string* diff,
 
   int first_control_input = actual.input_size();
   for (int i = 0; i < actual.input_size(); ++i) {
-    if (StringPiece(actual.input(i)).starts_with("^")) {
+    if (str_util::StartsWith(actual.input(i), "^")) {
       first_control_input = i;
       break;
     }
@@ -240,7 +241,7 @@ uint64 NodeDefHash(const NodeDef& ndef, const EqualGraphDefOptions& options) {
   // Normal inputs. Order important.
   int first_control_input = ndef.input_size();
   for (int i = 0; i < ndef.input_size(); ++i) {
-    if (StringPiece(ndef.input(i)).starts_with("^")) {
+    if (str_util::StartsWith(ndef.input(i), "^")) {
       first_control_input = i;
       break;
     }
diff --git a/tensorflow/core/util/memmapped_file_system.cc b/tensorflow/core/util/memmapped_file_system.cc
index ea0a381f4f..1fa6b8bec0 100644
--- a/tensorflow/core/util/memmapped_file_system.cc
+++ b/tensorflow/core/util/memmapped_file_system.cc
@@ -15,6 +15,7 @@ limitations under the License.
 #include "tensorflow/core/util/memmapped_file_system.h"
 
 #include "tensorflow/core/lib/core/errors.h"
+#include "tensorflow/core/lib/strings/str_util.h"
 #include "tensorflow/core/platform/protobuf.h"
 #include "tensorflow/core/util/memmapped_file_system.pb.h"
 
@@ -242,7 +243,7 @@ Status MemmappedFileSystem::InitializeFromFile(Env* env,
 }
 
 bool MemmappedFileSystem::IsMemmappedPackageFilename(const string& filename) {
-  return StringPiece(filename).starts_with(kMemmappedPackagePrefix);
+  return str_util::StartsWith(filename, kMemmappedPackagePrefix);
 }
 
 namespace {
diff --git a/tensorflow/core/util/reporter_test.cc b/tensorflow/core/util/reporter_test.cc
index 575c27d4ef..90ea09876e 100644
--- a/tensorflow/core/util/reporter_test.cc
+++ b/tensorflow/core/util/reporter_test.cc
@@ -29,7 +29,7 @@ namespace {
 
 // Tests of all the error paths in log_reader.cc follow:
 static void ExpectHasSubstr(StringPiece s, StringPiece expected) {
-  EXPECT_TRUE(StringPiece(s).contains(expected))
+  EXPECT_TRUE(str_util::StrContains(s, expected))
       << s << " does not contain " << expected;
 }
 
diff --git a/tensorflow/core/util/tensor_slice_reader_test.cc b/tensorflow/core/util/tensor_slice_reader_test.cc
index 010cc36823..3c9590e488 100644
--- a/tensorflow/core/util/tensor_slice_reader_test.cc
+++ b/tensorflow/core/util/tensor_slice_reader_test.cc
@@ -22,6 +22,7 @@ limitations under the License.
 #include "tensorflow/core/lib/core/status_test_util.h"
 #include "tensorflow/core/lib/core/stringpiece.h"
 #include "tensorflow/core/lib/io/path.h"
+#include "tensorflow/core/lib/strings/str_util.h"
 #include "tensorflow/core/lib/strings/strcat.h"
 #include "tensorflow/core/platform/env.h"
 #include "tensorflow/core/platform/logging.h"
@@ -422,7 +423,7 @@ static void VersionTest(const VersionDef& versions, const string& error) {
   // Read it back in and verify that we get the expected error
   TensorSliceReader reader(path, OpenTableTensorSliceReader);
   EXPECT_TRUE(reader.status().code() == error::INVALID_ARGUMENT &&
-              StringPiece(reader.status().error_message()).starts_with(error))
+              str_util::StartsWith(reader.status().error_message(), error))
       << "Expected error starting with '" << errors::InvalidArgument(error)
       << "', got '" << reader.status() << "'";
 }
diff --git a/tensorflow/core/util/tensor_slice_writer_test.cc b/tensorflow/core/util/tensor_slice_writer_test.cc
index ff5bfd65ae..31397f11b6 100644
--- a/tensorflow/core/util/tensor_slice_writer_test.cc
+++ b/tensorflow/core/util/tensor_slice_writer_test.cc
@@ -22,6 +22,7 @@ limitations under the License.
 #include "tensorflow/core/lib/core/status_test_util.h"
 #include "tensorflow/core/lib/core/stringpiece.h"
 #include "tensorflow/core/lib/io/path.h"
+#include "tensorflow/core/lib/strings/str_util.h"
 #include "tensorflow/core/platform/logging.h"
 #include "tensorflow/core/platform/protobuf.h"
 #include "tensorflow/core/platform/test.h"
@@ -333,8 +334,8 @@ TEST(TensorSliceWriteTest, SizeErrors) {
     const std::vector<int8> data(300000000, -1);
     Status s = writer.Add("test1", shape, slice, data.data());
     EXPECT_EQ(s.code(), error::INVALID_ARGUMENT);
-    EXPECT_TRUE(StringPiece(s.error_message())
-                    .contains("Tensor slice is too large to serialize"));
+    EXPECT_TRUE(str_util::StrContains(
+        s.error_message(), "Tensor slice is too large to serialize"));
   }
 
   // Add a large string tensor slice, which will fail.
@@ -344,8 +345,8 @@ TEST(TensorSliceWriteTest, SizeErrors) {
     const std::vector<string> data(256 * 1024, std::string(8192, 'f'));
     Status s = writer.Add("test2", shape, slice, data.data());
     EXPECT_EQ(s.code(), error::INVALID_ARGUMENT);
-    EXPECT_TRUE(StringPiece(s.error_message())
-                    .contains("Tensor slice is too large to serialize"));
+    EXPECT_TRUE(str_util::StrContains(
+        s.error_message(), "Tensor slice is too large to serialize"));
   }
 }