drive: Remove unused DriveServiceInterface::TouchResource

chrome/browser/drive/gdata_wapi_service.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 "chrome/browser/drive/gdata_wapi_service.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 448 matching lines @@
   DCHECK(!callback.is_null());
 
   return sender_->StartRequestWithRetry(
       new RenameResourceRequest(sender_.get(),
                                 url_generator_,
                                 callback,
                                 resource_id,
                                 new_title));
 }
 
-CancelCallback GDataWapiService::TouchResource(
-    const std::string& resource_id,
-    const base::Time& modified_date,
-    const base::Time& last_viewed_by_me_date,
-    const GetResourceEntryCallback& callback) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  DCHECK(!modified_date.is_null());
-  DCHECK(!last_viewed_by_me_date.is_null());
-  DCHECK(!callback.is_null());
-
-  // Unfortunately, there is no way to support this method on GData WAPI.
-  // So, this should always return an error.
-  base::MessageLoop::current()->PostTask(
-      FROM_HERE,
-      base::Bind(callback, HTTP_NOT_IMPLEMENTED,
-                 base::Passed(scoped_ptr<ResourceEntry>())));
-  return base::Bind(&base::DoNothing);
-}
-
 CancelCallback GDataWapiService::AddResourceToDirectory(
     const std::string& parent_resource_id,
     const std::string& resource_id,
     const EntryActionCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
 
   return sender_->StartRequestWithRetry(
       new AddResourceToDirectoryRequest(sender_.get(),
                                         url_generator_,
@@ skipping 173 matching lines @@
   if (CanSendRequest()) {
     FOR_EACH_OBSERVER(
         DriveServiceObserver, observers_, OnReadyToSendRequests());
   } else if (!HasRefreshToken()) {
     FOR_EACH_OBSERVER(
         DriveServiceObserver, observers_, OnRefreshTokenInvalid());
   }
 }
 
 }  // namespace drive