drive: Remove unused DriveServiceInterface::TouchResource

chrome/browser/drive/gdata_wapi_service.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_DRIVE_GDATA_WAPI_SERVICE_H_
 #define CHROME_BROWSER_DRIVE_GDATA_WAPI_SERVICE_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
@@ skipping 115 matching lines @@
       const std::string& resource_id,
       const std::string& parent_resource_id,
       const std::string& new_title,
       const base::Time& last_modified,
       const base::Time& last_viewed_by_me,
       const google_apis::GetResourceEntryCallback& callback) OVERRIDE;
   virtual google_apis::CancelCallback RenameResource(
       const std::string& resource_id,
       const std::string& new_title,
       const google_apis::EntryActionCallback& callback) OVERRIDE;
-  virtual google_apis::CancelCallback TouchResource(
-      const std::string& resource_id,
-      const base::Time& modified_date,
-      const base::Time& last_viewed_by_me_date,
-      const google_apis::GetResourceEntryCallback& callback) OVERRIDE;
   virtual google_apis::CancelCallback AddResourceToDirectory(
       const std::string& parent_resource_id,
       const std::string& resource_id,
       const google_apis::EntryActionCallback& callback) OVERRIDE;
   virtual google_apis::CancelCallback RemoveResourceFromDirectory(
       const std::string& parent_resource_id,
       const std::string& resource_id,
       const google_apis::EntryActionCallback& callback) OVERRIDE;
   virtual google_apis::CancelCallback AddNewDirectory(
       const std::string& parent_resource_id,
@@ skipping 48 matching lines @@
   // reference, as they may outlive this object.
   const google_apis::GDataWapiUrlGenerator url_generator_;
   const std::string custom_user_agent_;
 
   DISALLOW_COPY_AND_ASSIGN(GDataWapiService);
 };
 
 }  // namespace drive
 
 #endif  // CHROME_BROWSER_DRIVE_GDATA_WAPI_SERVICE_H_