mediaview: Support watchers in ArcFileSystemOperationRunner.

chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner_util.h

Index: chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner_util.h
diff --git a/chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner_util.h b/chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner_util.h
index 98740faa66260af6b9443bb88d49fdc2432ba3f7..31fd0b604e252035af9ad938454c15430080db19 100644
--- a/chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner_util.h
+++ b/chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner_util.h
@@ -7,6 +7,7 @@
 
 #include <string>
 
+#include "chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner.h"
 #include "components/arc/common/file_system.mojom.h"
 
 class GURL;
@@ -14,12 +15,16 @@ class GURL;
 namespace arc {
 namespace file_system_operation_runner_util {
 
-using GetFileSizeCallback = mojom::FileSystemInstance::GetFileSizeCallback;
+using GetFileSizeCallback = ArcFileSystemOperationRunner::GetFileSizeCallback;
 using OpenFileToReadCallback =
-    mojom::FileSystemInstance::OpenFileToReadCallback;
-using GetDocumentCallback = mojom::FileSystemInstance::GetDocumentCallback;
+    ArcFileSystemOperationRunner::OpenFileToReadCallback;
+using GetDocumentCallback = ArcFileSystemOperationRunner::GetDocumentCallback;
 using GetChildDocumentsCallback =
-    mojom::FileSystemInstance::GetChildDocumentsCallback;
+    ArcFileSystemOperationRunner::GetChildDocumentsCallback;
+using AddWatcherCallback = ArcFileSystemOperationRunner::AddWatcherCallback;
+using RemoveWatcherCallback =
+    ArcFileSystemOperationRunner::RemoveWatcherCallback;
+using WatcherCallback = ArcFileSystemOperationRunner::WatcherCallback;
 
 // Utility functions to post a task to run ArcFileSystemOperationRunner methods.
 // These functions must be called on the IO thread.
@@ -33,6 +38,12 @@ void GetDocumentOnIOThread(const std::string& authority,
 void GetChildDocumentsOnIOThread(const std::string& authority,
                                  const std::string& parent_document_id,
                                  const GetChildDocumentsCallback& callback);
+void AddWatcherOnIOThread(const std::string& authority,
+                          const std::string& document_id,
+                          const WatcherCallback& watcher_callback,
+                          const AddWatcherCallback& callback);
+void RemoveWatcherOnIOThread(int64_t watcher_id,
+                             const RemoveWatcherCallback& callback);
 
 }  // namespace file_system_operation_runner_util
 }  // namespace arc