Remove packaged app Windows shortcuts when app is uninstalled.

base/file_util.h

Index: base/file_util.h
diff --git a/base/file_util.h b/base/file_util.h
index fb6f6244a06cef12eb10af0d71d8ad000d000ab4..4c95da5a353f55015d47085b330bd50b26d7d5bd 100644
--- a/base/file_util.h
+++ b/base/file_util.h
@@ -240,6 +240,11 @@ enum ShortcutOptions {
 // false leaving the path as it is.
 BASE_EXPORT bool ResolveShortcut(FilePath* path);
 
+// Read the program arguments from the shortcut in |shortcut_path|. The result
+// of the operation is stored in |args|, which must not be NULL.
+BASE_EXPORT bool GetShortcutArguments(const FilePath& shortcut_path,
+                                      string16* args);
+
 // Creates (or updates) a Windows shortcut (.LNK file)
 // This method creates (or updates) a shortcut link using the information given.
 // Ensure you have initialized COM before calling into this function.