Componentize PrefSyncableService and support classes.

components/syncable_prefs/pref_service_syncable.h

Index: components/syncable_prefs/pref_service_syncable.h
diff --git a/chrome/browser/prefs/pref_service_syncable.h b/components/syncable_prefs/pref_service_syncable.h
similarity index 93%
rename from chrome/browser/prefs/pref_service_syncable.h
rename to components/syncable_prefs/pref_service_syncable.h
index 222a57065d1f0c623fef62b5cd906191e6fc2aad..b3cfe848200d98475e9d98d7533879d1932dd18b 100644
--- a/chrome/browser/prefs/pref_service_syncable.h
+++ b/components/syncable_prefs/pref_service_syncable.h
@@ -2,16 +2,16 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_PREFS_PREF_SERVICE_SYNCABLE_H_
-#define CHROME_BROWSER_PREFS_PREF_SERVICE_SYNCABLE_H_
+#ifndef COMPONENTS_SYNCABLE_PREFS_PREF_SERVICE_SYNCABLE_H_
+#define COMPONENTS_SYNCABLE_PREFS_PREF_SERVICE_SYNCABLE_H_
 
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/prefs/pref_service.h"
-#include "chrome/browser/prefs/pref_model_associator.h"
-#include "chrome/browser/prefs/synced_pref_observer.h"
 #include "components/pref_registry/pref_registry_syncable.h"
+#include "components/syncable_prefs/pref_model_associator.h"
+#include "components/syncable_prefs/synced_pref_observer.h"
 
 class PrefModelAssociatorClient;
 class PrefServiceSyncableObserver;
@@ -109,4 +109,4 @@ class PrefServiceSyncable : public PrefService {
   DISALLOW_COPY_AND_ASSIGN(PrefServiceSyncable);
 };
 
-#endif  // CHROME_BROWSER_PREFS_PREF_SERVICE_SYNCABLE_H_
+#endif  // COMPONENTS_SYNCABLE_PREFS_PREF_SERVICE_SYNCABLE_H_