Move Cast certificate verification code from extensions to components.

extensions/common/cast/cast_cert_validator_test_helpers.cc

-// Copyright 2016 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 "extensions/common/cast/cast_cert_validator_test_helpers.h"
-
-#include "base/files/file_util.h"
-#include "base/path_service.h"
-#include "extensions/common/extension_paths.h"
-#include "net/cert/pem_tokenizer.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace cast_test_helpers {
-
-namespace {
-
-// Reads a file from the extensions test data directory
-// (//src/extensions/test/data/)
-std::string ReadTestFileToString(const base::StringPiece& file_name) {
-  base::FilePath filepath;
-  if (!PathService::Get(extensions::DIR_TEST_DATA, &filepath)) {
-    ADD_FAILURE() << "Couldn't retrieve test data root";
-    return std::string();
-  }
-  filepath = filepath.AppendASCII(file_name);
-
-  // Read the full contents of the file.
-  std::string file_data;
-  if (!base::ReadFileToString(filepath, &file_data)) {
-    ADD_FAILURE() << "Couldn't read file: " << filepath.value();
-    return std::string();
-  }
-
-  return file_data;
-}
-
-}  // namespace
-
-std::vector<std::string> ReadCertificateChainFromFile(
-    const base::StringPiece& file_name) {
-  std::string file_data = ReadTestFileToString(file_name);
-
-  std::vector<std::string> pem_headers;
-  pem_headers.push_back("CERTIFICATE");
-
-  std::vector<std::string> certs;
-  net::PEMTokenizer pem_tokenizer(file_data, pem_headers);
-  while (pem_tokenizer.GetNext())
-    certs.push_back(pem_tokenizer.data());
-
-  EXPECT_FALSE(certs.empty());
-  return certs;
-}
-
-SignatureTestData ReadSignatureTestData(const base::StringPiece& file_name) {
-  SignatureTestData result;
-
-  std::string file_data = ReadTestFileToString(file_name);
-  EXPECT_FALSE(file_data.empty());
-
-  std::vector<std::string> pem_headers;
-  pem_headers.push_back("MESSAGE");
-  pem_headers.push_back("SIGNATURE SHA1");
-  pem_headers.push_back("SIGNATURE SHA256");
-
-  net::PEMTokenizer pem_tokenizer(file_data, pem_headers);
-  while (pem_tokenizer.GetNext()) {
-    const std::string& type = pem_tokenizer.block_type();
-    const std::string& value = pem_tokenizer.data();
-
-    if (type == "MESSAGE") {
-      result.message = value;
-    } else if (type == "SIGNATURE SHA1") {
-      result.signature_sha1 = value;
-    } else if (type == "SIGNATURE SHA256") {
-      result.signature_sha256 = value;
-    }
-  }
-
-  EXPECT_FALSE(result.message.empty());
-  EXPECT_FALSE(result.signature_sha1.empty());
-  EXPECT_FALSE(result.signature_sha256.empty());
-
-  return result;
-}
-
-}  // namespace cast_test_helpers