Modularize Compact Language Detector 2 (CLD2) data sources

chrome/browser/translate/translate_browser_test_utils.h

-// Copyright 2014 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.
-
-#ifndef CHROME_BROWSER_TRANSLATE_TRANSLATE_BROWSER_TEST_UTILS_H_
-#define CHROME_BROWSER_TRANSLATE_TRANSLATE_BROWSER_TEST_UTILS_H_
-
-#include "base/macros.h"
-
-namespace test {
-
-// A utility class that sets up CLD dynamic data upon calling Init() and cleans
-// it up when destroyed.
-// Test data lives under: src/chrome/test/data/cld2_component
-//
-// This class is intended to be instantiated within IN_PROC_BROWSER_TEST_F
-// test fixtures; it uses ASSERT macros for correctness, so that tests will
-// fail gracefully in error conditions. Sample use:
-//
-//   IN_PROC_BROWSER_TEST_F(BrowserTest, PageLanguageDetection) {
-//     test::ScopedCLDDynamicDataHarness dynamic_data_scope;
-//     ASSERT_NO_FATAL_FAILURE(dynamic_data_scope.Init());
-//     // ... your code that depends on language detection goes here
-//   }
-//
-// If you have a lot of tests that need language translation features, you can
-// add an instance of the ScopedCLDDynamicDataHarness to your test class'
-// private member variables and add the call to Init() into SetUpOnMainThread.
-// Sample use:
-//
-//   class MyTestClass : public InProcessBrowserTest {
-//    public:
-//     virtual void SetUpOnMainThread() OVERRIDE {
-//       dynamic_data_scope.Init();
-//       InProcessBrowserTest::SetUpOnMainThread();
-//     }
-//    private:
-//     test::ScopedCLDDynamicDataHarness dynamic_data_scope;
-//   };
-//
-class ScopedCLDDynamicDataHarness {
- public:
-  // Constructs the object, but does nothing. Call Init() to prepare the
-  // harness, and enclose that call in ASSERT_NO_FATAL_FAILURE(...).
-  ScopedCLDDynamicDataHarness();
-
-  // Reverses the work done by the constructor: any files and/or directories
-  // that would be created by the constructor are immediately and irrevocably
-  // deleted.
-  // If dynamic data is not currently available for any reason, this method has
-  // no net effect on the runtime.
-  ~ScopedCLDDynamicDataHarness();
-
-  // Call this method, wrapping it in ASSERT_NO_FATAL_FAILURE, to initialize
-  // the harness and trigger test failure of initialization fails.
-  void Init();
-
- private:
-  void ClearStandaloneDataFileState();
-
-  DISALLOW_COPY_AND_ASSIGN(ScopedCLDDynamicDataHarness);
-};
-
-}  // namespace test
-
-#endif  // CHROME_BROWSER_TRANSLATE_TRANSLATE_BROWSER_TEST_UTILS_H_