Bug 1247723 - Disable the Font Panel; r=pbro

MozReview-Commit-ID: 1x6Fi0SvPpr

devtools/client/inspector/fonts/test/head.js

@@ -9,6 +9,11 @@ Services.scriptloader.loadSubScript(
   "chrome://mochitests/content/browser/devtools/client/inspector/test/head.js",
   this);
 
+Services.prefs.setBoolPref("devtools.fontinspector.enabled", true);
+registerCleanupFunction(() => {
+  Services.prefs.clearUserPref("devtools.fontinspector.enabled");
+});
+
 /**
  * Adds a new tab with the given URL, opens the inspector and selects the
  * font-inspector tab.

devtools/client/preferences/devtools.js

@@ -325,7 +325,7 @@ pref("devtools.editor.enableCodeFolding", true);
 pref("devtools.editor.autocomplete", true);
 
 // Enable the Font Inspector
-pref("devtools.fontinspector.enabled", true);
+pref("devtools.fontinspector.enabled", false);
 
 // Pref to store the browser version at the time of a telemetry ping for an
 // opened developer tool. This allows us to ping telemetry just once per browser