2.2.7 [W3C-HTML51] Section 22.214.171.124 Standard metadata names
C0085: The text "This site says..." is used for UI in cases of page-created dialogs
The specification states:
126.96.36.199 Standard metadata names This specification defines a few names for the name attribute of the meta element. ... application-name ... User agents may use the application name in UI in preference to the page's title, since the title might include status messages and the like relevant to the status of the page at a particular moment in time instead of just being the name of the application.
The text "This site says..." is used for UI in cases of page-created dialogs.