Implement CancelGetFile on DriveFileSystem.

This method will be used to refactor DriveURLRequestJob for testing.

BUG=159383
TEST=Ran unit_tests.


Review URL: https://chromiumcodereview.appspot.com/12638025

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@187649 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 14 insertions, 0 deletions

diff --git a/chrome/browser/chromeos/drive/drive_file_system_interface.h b/chrome/browser/chromeos/drive/drive_file_system_interface.h
index 868b574..c3ea2fc 100644
--- a/chrome/browser/chromeos/drive/drive_file_system_interface.h
+++ b/chrome/browser/chromeos/drive/drive_file_system_interface.h
@@ -265,6 +265,20 @@ class DriveFileSystemInterface {
       const GetFileCallback& get_file_callback,
       const google_apis::GetContentCallback& get_content_callback) = 0;
 
+  // Cancels the file fetch of |drive_file_path|, which can be retieved by
+  // GetEntryInfoByResourceId.
+  // The currently the running task is identified by file path on drive,
+  // so this method takes it as a task identifier.
+  // Note that we will moving tha task managing into DriveScheduler, and
+  // currently it is planned to use some task ID at that time.
+  // Once it is done, we can use the ID from this method.
+  // Also note that the interface looks a little bit weird because the task
+  // is started by GetFileByResourceId, which identifies a file by
+  // |resource_id|, but this method does by |drive_file_path|. This
+  // inconsistency is introduced to work with the existing code and should be
+  // cleaned up.
+  virtual void CancelGetFile(const base::FilePath& drive_file_path) = 0;
+
   // Updates a file by the given |resource_id| on the Drive server by
   // uploading an updated version. Used for uploading dirty files. The file
   // should already be present in the cache.