Sanitize PrefStore interface.

chrome/browser/prefs/pref_change_registrar_unittest.cc

Index: chrome/browser/prefs/pref_change_registrar_unittest.cc
diff --git a/chrome/browser/prefs/pref_change_registrar_unittest.cc b/chrome/browser/prefs/pref_change_registrar_unittest.cc
index 33101671985155b007a85b8c51345df0909c6a8f..2e4cd0e8425ef38c00ba824fddfb7a570508901a 100644
--- a/chrome/browser/prefs/pref_change_registrar_unittest.cc
+++ b/chrome/browser/prefs/pref_change_registrar_unittest.cc
@@ -15,6 +15,8 @@
 using testing::Mock;
 using testing::Eq;
 
+namespace {
+
 // A mock provider that allows us to capture pref observer changes.
 class MockPrefService : public TestingPrefService {
  public:
@@ -25,6 +27,8 @@ class MockPrefService : public TestingPrefService {
   MOCK_METHOD2(RemovePrefObserver, void(const char*, NotificationObserver*));
 };
 
+}  // namespace
+
 class PrefChangeRegistrarTest : public testing::Test {
  public:
   PrefChangeRegistrarTest() {}