Fix integration tests in src/chrome and src/extensions so that we can turn on IO thread checks wi...

components/autofill/core/browser/data_driven_test.cc

 // Copyright 2013 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 "components/autofill/core/browser/data_driven_test.h"
 
 #include "base/files/file_enumerator.h"
 #include "base/files/file_util.h"
 #include "base/strings/string_util.h"
+#include "base/threading/thread_restrictions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace autofill {
 namespace {
 
 // Reads |file| into |content|, and converts Windows line-endings to Unix ones.
 // Returns true on success.
 bool ReadFile(const base::FilePath& file, std::string* content) {
   if (!base::ReadFileToString(file, content))
     return false;
 
   base::ReplaceSubstringsAfterOffset(content, 0, "\r\n", "\n");
   return true;
 }
 
 // Write |content| to |file|. Returns true on success.
 bool WriteFile(const base::FilePath& file, const std::string& content) {
   int write_size = base::WriteFile(file, content.c_str(),
                                    static_cast<int>(content.length()));
   return write_size == static_cast<int>(content.length());
 }
 
 }  // namespace
 
 void DataDrivenTest::RunDataDrivenTest(
     const base::FilePath& input_directory,
     const base::FilePath& output_directory,
     const base::FilePath::StringType& file_name_pattern) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   ASSERT_TRUE(base::DirectoryExists(input_directory));
   ASSERT_TRUE(base::DirectoryExists(output_directory));
   base::FileEnumerator input_files(input_directory,
                                    false,
                                    base::FileEnumerator::FILES,
                                    file_name_pattern);
 
   for (base::FilePath input_file = input_files.Next();
        !input_file.empty();
        input_file = input_files.Next()) {
     RunOneDataDrivenTest(input_file, output_directory);
   }
 }
 
 void DataDrivenTest::RunOneDataDrivenTest(
     const base::FilePath& test_file_name,
     const base::FilePath& output_directory) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   // iOS doesn't get rid of removed test files. TODO(estade): remove this after
   // all iOS bots are clobbered.
   if (test_file_name.BaseName().value() == FILE_PATH_LITERAL("multimerge.in"))
     return;
 
   ASSERT_TRUE(base::DirectoryExists(output_directory));
   SCOPED_TRACE(test_file_name.BaseName().value());
 
   std::string input;
   ReadFile(test_file_name, &input);
 
   std::string output;
+  base::ThreadRestrictions::SetIOAllowed(false);
   GenerateResults(input, &output);
+  base::ThreadRestrictions::SetIOAllowed(true);
 
   base::FilePath output_file = output_directory.Append(
       test_file_name.BaseName().StripTrailingSeparators().ReplaceExtension(
           FILE_PATH_LITERAL(".out")));
 
   std::string output_file_contents;
   if (ReadFile(output_file, &output_file_contents))
     EXPECT_EQ(output_file_contents, output);
   else
     ASSERT_TRUE(WriteFile(output_file, output));
@@ skipping 18 matching lines @@
 }
 
 DataDrivenTest::DataDrivenTest(const base::FilePath& test_data_directory)
     : test_data_directory_(test_data_directory) {
 }
 
 DataDrivenTest::~DataDrivenTest() {
 }
 
 }  // namespace autofill