Modify error code of move/copy preparation.

webkit/fileapi/file_system_file_util.cc

Index: webkit/fileapi/file_system_file_util.cc
diff --git a/webkit/fileapi/file_system_file_util.cc b/webkit/fileapi/file_system_file_util.cc
index aadc1cb2a958624f29d30a7d534181ffb27b8da6..85f57e2cdfd8b159e9e4e79761d4de19b6d68e5b 100644
--- a/webkit/fileapi/file_system_file_util.cc
+++ b/webkit/fileapi/file_system_file_util.cc
@@ -234,12 +234,12 @@ FileSystemFileUtil::PerformCommonCheckAndPreparationForMoveAndCopy(
   bool src_is_directory = DirectoryExists(context, src_file_path);
   bool dest_is_directory = DirectoryExists(context, dest_file_path);
   if (src_is_directory && !dest_is_directory)
-    return base::PLATFORM_FILE_ERROR_NOT_A_DIRECTORY;
+    return base::PLATFORM_FILE_ERROR_INVALID_OPERATION;
 
   // |src_file_path| exists and is a file.
   // |dest_file_path| exists and is a directory.
   if (!src_is_directory && dest_is_directory)
-    return base::PLATFORM_FILE_ERROR_NOT_A_FILE;
+    return base::PLATFORM_FILE_ERROR_INVALID_OPERATION;
 
   // It is an error to copy/move an entry into the same path.
   if (src_file_path.value() == dest_file_path.value())