Bug 1431601 - Fix the comment for nsIDOMWindowUtils.getViewportInfo. r=botond

nsContentUtils::GetViewportInfo was removed and the comment for the function
was moved to nsIDocument::GetViewportInfo in
https://hg.mozilla.org/mozilla-central/rev/37d64688bf9d

Depends on D8316

Differential Revision: https://phabricator.services.mozilla.com/D8317

--HG--
extra : moz-landing-system : lando

dom/interfaces/base/nsIDOMWindowUtils.idl

@@ -115,7 +115,7 @@ interface nsIDOMWindowUtils : nsISupports {
 
   /**
    * Information retrieved from the <meta name="viewport"> tag.
-   * See nsContentUtils::GetViewportInfo for more information.
+   * See nsIDocument::GetViewportInfo for more information.
    */
   void getViewportInfo(in uint32_t aDisplayWidth, in uint32_t aDisplayHeight,
                        out double aDefaultZoom, out boolean aAllowZoom,