revert customizableUI

app/profile/firefox.js

@@ -1550,7 +1550,7 @@ pref("browser.urlbar.searchEngagementTelemetry.enabled", false);
 // Make sure sites expecting Chromium or Firefox still work.
 pref("general.useragent.compatMode.firefox", true);
 // CustomizableUI state of the browser's user interface
-// pref("browser.uiCustomization.state", "{\"placements\":{\"widget-overflow-fixed-list\":[],\"unified-extensions-area\":[],\"nav-bar\":[\"back-button\",\"forward-button\",\"stop-reload-button\",\"home-button\",\"urlbar-container\",\"downloads-button\",\"developer-button\",\"fxa-toolbar-menu-button\",\"unified-extensions-button\"],\"toolbar-menubar\":[\"menubar-items\"],\"TabsToolbar\":[\"tabbrowser-tabs\",\"new-tab-button\",\"alltabs-button\"],\"PersonalToolbar\":[\"import-button\",\"personal-bookmarks\"]},\"seen\":[\"developer-button\"],\"dirtyAreaCache\":[\"PersonalToolbar\",\"nav-bar\",\"toolbar-menubar\",\"TabsToolbar\"],\"currentVersion\":19,\"newElementCount\":0}");
+pref("browser.uiCustomization.state", "{\"placements\":{\"widget-overflow-fixed-list\":[],\"unified-extensions-area\":[],\"nav-bar\":[\"back-button\",\"forward-button\",\"stop-reload-button\",\"home-button\",\"urlbar-container\",\"downloads-button\",\"developer-button\",\"fxa-toolbar-menu-button\",\"unified-extensions-button\"],\"toolbar-menubar\":[\"menubar-items\"],\"TabsToolbar\":[\"tabbrowser-tabs\",\"new-tab-button\",\"alltabs-button\"],\"PersonalToolbar\":[\"import-button\",\"personal-bookmarks\"]},\"seen\":[\"developer-button\"],\"dirtyAreaCache\":[\"PersonalToolbar\",\"nav-bar\",\"toolbar-menubar\",\"TabsToolbar\"],\"currentVersion\":19,\"newElementCount\":0}");
 // pref("browser.uiCustomization.autoAdd", "{\"placements\":{\"widget-overflow-fixed-list\":[],\"unified-extensions-area\":[],\"nav-bar\":[\"back-button\",\"forward-button\",\"stop-reload-button\",\"home-button\",\"urlbar-container\",\"downloads-button\",\"developer-button\",\"fxa-toolbar-menu-button\",\"unified-extensions-button\"],\"toolbar-menubar\":[\"menubar-items\"],\"TabsToolbar\":[\"tabbrowser-tabs\",\"new-tab-button\",\"alltabs-button\"],\"PersonalToolbar\":[\"import-button\",\"personal-bookmarks\"]},\"seen\":[\"developer-button\"],\"dirtyAreaCache\":[\"PersonalToolbar\",\"nav-bar\",\"toolbar-menubar\",\"TabsToolbar\"],\"currentVersion\":19,\"newElementCount\":0}");
 // END MISC MERCURY SETTINGS
 
@@ -1807,9 +1807,6 @@ pref("dom.debug.propagate_gesture_events_through_content", false);
 // CustomizableUI debug logging.
 pref("browser.uiCustomization.debug", false);
 
-// CustomizableUI state of the browser's user interface
-pref("browser.uiCustomization.state", "");
-
 // If set to false, FxAccounts and Sync will be unavailable.
 // A restart is mandatory after flipping that preference.
 pref("identity.fxaccounts.enabled", true);