Allow browser tests to run with dynamic CLD data.

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 when constructed, and cleans
+// it up when destroyed.
+// The test data for this class lives under:
+//   src/chrome/test/data/cld2_component
+class ScopedCLDDynamicDataHarness {
+ public:
+  // Invokes whatever dark magic is required in order to make the CLD data
+  // available immediately to testing code. The implementation may vary
+  // depending on the following defines, bypassing any external data access
+  // requirements.
+  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();
+
+ private:
+  void ClearStandaloneDataFileState();
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedCLDDynamicDataHarness);
+};
+
+}  // namespace test
+
+#endif  // CHROME_BROWSER_TRANSLATE_TRANSLATE_BROWSER_TEST_UTILS_H_