Fix translate namespace

components/translate/core/browser/translate_prefs_unittest.cc

Index: components/translate/core/browser/translate_prefs_unittest.cc
diff --git a/components/translate/core/browser/translate_prefs_unittest.cc b/components/translate/core/browser/translate_prefs_unittest.cc
index b9cb3159728881594ac2785d28b1497e8802b32a..1b70d14119f133969898d721a4937197b0dda0e4 100644
--- a/components/translate/core/browser/translate_prefs_unittest.cc
+++ b/components/translate/core/browser/translate_prefs_unittest.cc
@@ -11,6 +11,8 @@
 #include "components/translate/core/browser/translate_download_manager.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+namespace translate {
+
 TEST(TranslatePrefsTest, CreateBlockedLanguages) {
   TranslateDownloadManager::GetInstance()->set_application_locale("en");
   std::vector<std::string> blacklisted_languages;
@@ -118,3 +120,5 @@ TEST(TranslatePrefsTest, CreateBlockedLanguagesNonEnglishUI) {
     }
   }
 }
+
+}  // namespace translate