[Extensions] Convert some ChromeSyncExtensionFunctions

chrome/browser/extensions/api/sync_file_system/sync_file_system_api.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_SYNC_FILE_SYSTEM_SYNC_FILE_SYSTEM_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_SYNC_FILE_SYSTEM_SYNC_FILE_SYSTEM_API_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 102 matching lines @@
 
   // Returns the file system context for this extension.
   storage::FileSystemContext* GetFileSystemContext();
 
   void DidOpenFileSystem(const GURL& root_url,
                          const std::string& file_system_name,
                          base::File::Error error);
 };
 
 class SyncFileSystemSetConflictResolutionPolicyFunction
-    : public ChromeSyncExtensionFunction {
+    : public UIThreadExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("syncFileSystem.setConflictResolutionPolicy",
                              SYNCFILESYSTEM_SETCONFLICTRESOLUTIONPOLICY)
 
  protected:
   ~SyncFileSystemSetConflictResolutionPolicyFunction() override {}
-  bool RunSync() override;
+  ResponseAction Run() override;
 };
 
 class SyncFileSystemGetConflictResolutionPolicyFunction
-    : public ChromeSyncExtensionFunction {
+    : public UIThreadExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("syncFileSystem.getConflictResolutionPolicy",
                              SYNCFILESYSTEM_GETCONFLICTRESOLUTIONPOLICY)
 
  protected:
   ~SyncFileSystemGetConflictResolutionPolicyFunction() override {}
-  bool RunSync() override;
+  ResponseAction Run() override;
 };
 
 class SyncFileSystemGetServiceStatusFunction
-    : public ChromeSyncExtensionFunction {
+    : public UIThreadExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("syncFileSystem.getServiceStatus",
                              SYNCFILESYSTEM_GETSERVICESTATUS)
 
  protected:
   ~SyncFileSystemGetServiceStatusFunction() override {}
-  bool RunSync() override;
+  ResponseAction Run() override;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_SYNC_FILE_SYSTEM_SYNC_FILE_SYSTEM_API_H_