Remove usage of FOR_EACH_OBSERVER macro in components/sync

components/sync/js/sync_js_controller.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/sync/js/sync_js_controller.h"
 
 #include "base/location.h"
 #include "components/sync/js/js_backend.h"
 #include "components/sync/js/js_event_details.h"
 
@@ skipping 16 matching lines @@
 }
 
 void SyncJsController::AttachJsBackend(
     const WeakHandle<JsBackend>& js_backend) {
   js_backend_ = js_backend;
   UpdateBackendEventHandler();
 }
 
 void SyncJsController::HandleJsEvent(const std::string& name,
                                      const JsEventDetails& details) {
-  FOR_EACH_OBSERVER(JsEventHandler, js_event_handlers_,
-                    HandleJsEvent(name, details));
+  for (auto& observer : js_event_handlers_)
+    observer.HandleJsEvent(name, details);
 }
 
 void SyncJsController::UpdateBackendEventHandler() {
   if (js_backend_.IsInitialized()) {
     // To avoid making the backend send useless events, we clear the
     // event handler we pass to it if we don't have any event
     // handlers.
     WeakHandle<JsEventHandler> backend_event_handler =
         js_event_handlers_.might_have_observers()
             ? MakeWeakHandle(AsWeakPtr())
             : WeakHandle<SyncJsController>();
     js_backend_.Call(FROM_HERE, &JsBackend::SetJsEventHandler,
                      backend_event_handler);
   }
 }
 
 }  // namespace syncer