Add SCOPED_TRACE to data driven tests.

chrome/browser/autofill/data_driven_test.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/autofill/data_driven_test.h"
 
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/string_util.h"
 #include "chrome/common/chrome_paths.h"
@@ skipping 25 matching lines @@
     const FilePath& output_directory,
     const FilePath::StringType& file_name_pattern) {
   file_util::FileEnumerator input_files(input_directory,
                                         false,
                                         file_util::FileEnumerator::FILES,
                                         file_name_pattern);
 
   for (FilePath input_file = input_files.Next();
        !input_file.empty();
        input_file = input_files.Next()) {
+    SCOPED_TRACE(input_file.BaseName().value());
+
     std::string input;
     ASSERT_TRUE(ReadFile(input_file, &input));
 
     std::string output;
     GenerateResults(input, &output);
 
     FilePath output_file = output_directory.Append(
         input_file.BaseName().StripTrailingSeparators().ReplaceExtension(
             FILE_PATH_LITERAL(".out")));
 
@@ skipping 23 matching lines @@
                                  .Append(test_name)
                                  .AppendASCII("output");
   return test_data_dir_;
 }
 
 DataDrivenTest::DataDrivenTest() {
 }
 
 DataDrivenTest::~DataDrivenTest() {
 }