Bug 951854 - [Australis] Add developer tools button to panel placements in BrowserUITelemetry. r=jaws. DONTBUILD

browser/modules/BrowserUITelemetry.jsm

@@ -32,6 +32,7 @@ XPCOMUtils.defineLazyGetter(this, "DEFAULT_AREA_PLACEMENTS", function() {
       "find-button",
       "preferences-button",
       "add-ons-button",
+      "developer-button",
     ],
     "nav-bar": [
       "urlbar-container",