[Sync] Introduce GmsCoreSyncListener.

sync/test/fake_server/android/fake_server_helper_android.h

 // Copyright 2014 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.
 
 #ifndef SYNC_TEST_FAKE_SERVER_ANDROID_FAKE_SERVER_HELPER_ANDROID
 #define SYNC_TEST_FAKE_SERVER_ANDROID_FAKE_SERVER_HELPER_ANDROID
 
 #include <jni.h>
 
 #include "base/android/scoped_java_ref.h"
@@ skipping 96 matching lines @@
       jobject obj,
       jlong fake_server);
 
   // Deletes an entity on the server. This is the JNI way of injecting a
   // tombstone.
   void DeleteEntity(JNIEnv* env,
                     jobject obj,
                     jlong fake_server,
                     jstring id);
 
+  // Simulates a dashboard stop and clear.
+  void ClearServerData(JNIEnv* env, jobject obj, jlong fake_server);
+
  private:
   virtual ~FakeServerHelperAndroid();
 
   // Deserializes |serialized_entity_specifics| into |entity_specifics|.
   void DeserializeEntitySpecifics(JNIEnv* env,
                                   jbyteArray serialized_entity_specifics,
                                   sync_pb::EntitySpecifics& entity_specifics);
 
   // Creates a bookmark entity.
   scoped_ptr<fake_server::FakeServerEntity> CreateBookmarkEntity(
       JNIEnv* env,
       jstring title,
       jstring url,
       jstring parent_id);
 };
 
 #endif  // SYNC_TEST_FAKE_SERVER_ANDROID_FAKE_SERVER_HELPER_ANDROID