drive: Add drive/trash

chrome/browser/chromeos/drive/file_system_util.h

Index: chrome/browser/chromeos/drive/file_system_util.h
diff --git a/chrome/browser/chromeos/drive/file_system_util.h b/chrome/browser/chromeos/drive/file_system_util.h
index 710b5a640b175c8fdd18fa6acdd98313cf2a425e..196c5a7b7ef3b72f0a74bae056a26887bfb43ef4 100644
--- a/chrome/browser/chromeos/drive/file_system_util.h
+++ b/chrome/browser/chromeos/drive/file_system_util.h
@@ -36,6 +36,9 @@ const char kDriveGrandRootLocalId[] = "<drive>";
 // "drive/other" diretory's local ID is fixed to this value.
 const char kDriveOtherDirLocalId[] = "<other>";
 
+// "drive/trash" diretory's local ID is fixed to this value.
+const char kDriveTrashDirLocalId[] = "<trash>";
+
 // The directory names used for the Google Drive file system tree. These names
 // are used in URLs for the file manager, hence user-visible.
 const base::FilePath::CharType kDriveGrandRootDirName[] =
@@ -47,6 +50,9 @@ const base::FilePath::CharType kDriveMyDriveRootDirName[] =
 const base::FilePath::CharType kDriveOtherDirName[] =
     FILE_PATH_LITERAL("other");
 
+const base::FilePath::CharType kDriveTrashDirName[] =
+    FILE_PATH_LITERAL("trash");
+
 // Returns the path of the top root of the pseudo tree.
 const base::FilePath& GetDriveGrandRootPath();