Bug 1575785 - Show a confirmation hint when a user successfully submitted a breakage report. r=nhnt11

Differential Revision: https://phabricator.services.mozilla.com/D51383

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

browser/base/content/browser-siteProtections.js

@@ -2305,6 +2305,7 @@ var gProtectionsHandler = {
           this._protectionsPopupSiteNotWorkingReportError.hidden = false;
         } else {
           this._protectionsPopup.hidePopup();
+          ConfirmationHint.show(this.iconBox, "breakageReport");
         }
       })
       .catch(Cu.reportError);

browser/locales/en-US/chrome/browser/browser.properties

@@ -1020,6 +1020,7 @@ confirmationHint.addSearchEngine.label = Search engine added!
 confirmationHint.pinTab.label = Pinned!
 confirmationHint.pinTab.description = Right-click the tab to unpin it.
 confirmationHint.passwordSaved.label = Password saved!
+confirmationHint.breakageReport.label = Report sent. Thank you!
 
 # LOCALIZATION NOTE (livebookmarkMigration.title):
 # Used by the export of user's live bookmarks to an OPML file as a title for the file.