drive: Remove unused DriveServiceInterface::TouchResource

chrome/browser/drive/gdata_wapi_service.cc

Index: chrome/browser/drive/gdata_wapi_service.cc
diff --git a/chrome/browser/drive/gdata_wapi_service.cc b/chrome/browser/drive/gdata_wapi_service.cc
index c3c139c4639cd1a78479397a6b5e9caeacf91c88..b9de153e6bd89a7e6574a1747bb82375828dbc39 100644
--- a/chrome/browser/drive/gdata_wapi_service.cc
+++ b/chrome/browser/drive/gdata_wapi_service.cc
@@ -466,25 +466,6 @@ CancelCallback GDataWapiService::RenameResource(
                                 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,