Bug 1706604 - Part 2: Strip the URI before create the channel in nsDocShell. r=smaug

The target query parameters will be stripped from the loading URI in
nsDocShell before creating the channel for the loading. We will only
strip the URI for top-level loading but not for frames. It's because
there is no need to strip frames if we've stripped in top-level already.

Differential Revision: https://phabricator.services.mozilla.com/D113843

docshell/base/nsDocShellLoadState.h

@@ -321,6 +321,8 @@ class nsDocShellLoadState final {
                                    bool aLoadingFromActiveEntry);
   void ClearLoadIsFromSessionHistory();
 
+  void MaybeStripTrackerQueryStrings(mozilla::dom::BrowsingContext* aContext);
+
  protected:
   // Destructor can't be defaulted or inlined, as header doesn't have all type
   // includes it needs to do so.