components: Move PrefRegistrySyncable into user_prefs namespace.

chrome/test/base/testing_pref_service_syncable.h

Index: chrome/test/base/testing_pref_service_syncable.h
diff --git a/chrome/test/base/testing_pref_service_syncable.h b/chrome/test/base/testing_pref_service_syncable.h
index ccd47acadd144f812876a5dbb703420770024255..57b0398505c51fbbf1bd2e40f61a0a9dd04daa7c 100644
--- a/chrome/test/base/testing_pref_service_syncable.h
+++ b/chrome/test/base/testing_pref_service_syncable.h
@@ -9,38 +9,39 @@
 #include "base/prefs/testing_pref_service.h"
 #include "chrome/browser/prefs/pref_service_syncable.h"
 
+namespace user_prefs {
 class PrefRegistrySyncable;
+}
 
 // Test version of PrefServiceSyncable.
 class TestingPrefServiceSyncable
-    : public TestingPrefServiceBase<PrefServiceSyncable, PrefRegistrySyncable> {
+    : public TestingPrefServiceBase<PrefServiceSyncable,
+                                    user_prefs::PrefRegistrySyncable> {
  public:
   TestingPrefServiceSyncable();
-  TestingPrefServiceSyncable(
-      TestingPrefStore* managed_prefs,
-      TestingPrefStore* user_prefs,
-      TestingPrefStore* recommended_prefs,
-      PrefRegistrySyncable* pref_registry,
-      PrefNotifierImpl* pref_notifier);
+  TestingPrefServiceSyncable(TestingPrefStore* managed_prefs,
+                             TestingPrefStore* user_prefs,
+                             TestingPrefStore* recommended_prefs,
+                             user_prefs::PrefRegistrySyncable* pref_registry,
+                             PrefNotifierImpl* pref_notifier);
   virtual ~TestingPrefServiceSyncable();
 
   // This is provided as a convenience; on a production PrefService
   // you would do all registrations before constructing it, passing it
   // a PrefRegistry via its constructor (or via e.g. PrefServiceBuilder).
-  PrefRegistrySyncable* registry();
+  user_prefs::PrefRegistrySyncable* registry();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TestingPrefServiceSyncable);
 };
 
-template<>
-TestingPrefServiceBase<PrefServiceSyncable, PrefRegistrySyncable>::
-    TestingPrefServiceBase(
-        TestingPrefStore* managed_prefs,
-        TestingPrefStore* user_prefs,
-        TestingPrefStore* recommended_prefs,
-        PrefRegistrySyncable* pref_registry,
-        PrefNotifierImpl* pref_notifier);
+template <>
+TestingPrefServiceBase<PrefServiceSyncable, user_prefs::PrefRegistrySyncable>::
+    TestingPrefServiceBase(TestingPrefStore* managed_prefs,
+                           TestingPrefStore* user_prefs,
+                           TestingPrefStore* recommended_prefs,
+                           user_prefs::PrefRegistrySyncable* pref_registry,
+                           PrefNotifierImpl* pref_notifier);
 
 #endif  // CHROME_TEST_BASE_TESTING_PREF_SERVICE_SYNCABLE_H_