Split recursive Copy/Move into async tasks and support cross operation (in local case)

webkit/fileapi/local_file_system_operation_unittest.cc

Index: webkit/fileapi/local_file_system_operation_unittest.cc
diff --git a/webkit/fileapi/local_file_system_operation_unittest.cc b/webkit/fileapi/local_file_system_operation_unittest.cc
index d170b7c1e299e0c87320026346fc4cbd8837dcab..c49e2b2adf628b99feed23745f10ef2a23cfbad9 100644
--- a/webkit/fileapi/local_file_system_operation_unittest.cc
+++ b/webkit/fileapi/local_file_system_operation_unittest.cc
@@ -685,7 +685,9 @@ TEST_F(LocalFileSystemOperationTest, TestCopySuccessSrcDirRecursive) {
   EXPECT_TRUE(FileExists(dest_dir_path.Append(
       VirtualPath::BaseName(child_dir_path)).Append(
       VirtualPath::BaseName(grandchild_file_path))));
-  EXPECT_EQ(1, quota_manager_proxy()->notify_storage_accessed_count());
+
+  // For recursive copy we may record multiple read access.
+  EXPECT_GE(quota_manager_proxy()->notify_storage_accessed_count(), 1);
 
   EXPECT_EQ(2, change_observer()->get_and_reset_create_directory_count());
   EXPECT_EQ(1, change_observer()->get_and_reset_remove_directory_count());