Enable RL sync by default on iOS

components/reading_list/ios/reading_list_model_observer.h

Index: components/reading_list/ios/reading_list_model_observer.h
diff --git a/components/reading_list/reading_list_model_observer.h b/components/reading_list/ios/reading_list_model_observer.h
similarity index 93%
rename from components/reading_list/reading_list_model_observer.h
rename to components/reading_list/ios/reading_list_model_observer.h
index 813c90598e0d5bd675aac26d0196122c1a8b3fd5..056f2cff64815e078bed813fdaf6d042544e357f 100644
--- a/components/reading_list/reading_list_model_observer.h
+++ b/components/reading_list/ios/reading_list_model_observer.h
@@ -2,11 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef COMPONENTS_READING_LIST_READING_LIST_MODEL_OBSERVER_H_
-#define COMPONENTS_READING_LIST_READING_LIST_MODEL_OBSERVER_H_
+#ifndef COMPONENTS_READING_LIST_IOS_READING_LIST_MODEL_OBSERVER_H_
+#define COMPONENTS_READING_LIST_IOS_READING_LIST_MODEL_OBSERVER_H_
 
-#import <set>
-#import <vector>
+#include <set>
+#include <vector>
 
 class ReadingListModel;
 class ReadingListEntry;
@@ -76,4 +76,4 @@ class ReadingListModelObserver {
   DISALLOW_COPY_AND_ASSIGN(ReadingListModelObserver);
 };
 
-#endif  // COMPONENTS_READING_LIST_READING_LIST_MODEL_OBSERVER_H_
+#endif  // COMPONENTS_READING_LIST_IOS_READING_LIST_MODEL_OBSERVER_H_