--- a/browser/components/BrowserGlue.jsm
+++ b/browser/components/BrowserGlue.jsm
@@ -31,23 +31,16 @@ let ACTORS = {
       moduleURI: "resource:///actors/BrowserTabChild.jsm",
 
       events: {
         DOMWindowCreated: {},
         MozAfterPaint: {},
         "MozDOMPointerLock:Entered": {},
         "MozDOMPointerLock:Exited": {},
       },
-      messages: [
-        "Browser:Reload",
-        "Browser:AppTab",
-        "Browser:HasSiblings",
-        "MixedContent:ReenableProtection",
-        "UpdateCharacterSet",
-      ],
     },
   },
 
   ContextMenu: {
     parent: {
       moduleURI: "resource:///actors/ContextMenuParent.jsm",
     },
 
@@ -66,50 +59,36 @@ let ACTORS = {
       moduleURI: "resource:///actors/FormValidationParent.jsm",
     },
 
     child: {
       moduleURI: "resource:///actors/FormValidationChild.jsm",
       events: {
         MozInvalidForm: {},
       },
-      messages: ["FormValidation:ShowPopup", "FormValidation:HidePopup"],
     },
 
     allFrames: true,
   },
 
   Plugin: {
     parent: {
       moduleURI: "resource:///actors/PluginParent.jsm",
-      messages: [
-        "PluginContent:ShowClickToPlayNotification",
-        "PluginContent:RemoveNotification",
-        "PluginContent:ShowPluginCrashedNotification",
-        "PluginContent:SubmitReport",
-        "PluginContent:LinkClickCallback",
-        "PluginContent:GetCrashData",
-      ],
     },
     child: {
       moduleURI: "resource:///actors/PluginChild.jsm",
       events: {
         PluginBindingAttached: { capture: true, wantUntrusted: true },
         PluginCrashed: { capture: true },
         PluginOutdated: { capture: true },
         PluginInstantiated: { capture: true },
         PluginRemoved: { capture: true },
         HiddenPlugin: { capture: true },
       },
 
-      messages: [
-        "PluginParent:ActivatePlugins",
-        "PluginParent:Test:ClearCrashData",
-      ],
-
       observers: ["decoder-doctor-notification"],
     },
 
     allFrames: true,
   },
 
   Prompt: {
     parent: {
@@ -117,18 +96,16 @@ let ACTORS = {
     },
 
     allFrames: true,
   },
 
   SwitchDocumentDirection: {
     child: {
       moduleURI: "resource:///actors/SwitchDocumentDirectionChild.jsm",
-
-      messages: ["SwitchDocumentDirection"],
     },
 
     allFrames: true,
   },
 };
 
 let LEGACY_ACTORS = {
   AboutLogins: {

--- a/toolkit/modules/ActorManagerParent.jsm
+++ b/toolkit/modules/ActorManagerParent.jsm
@@ -105,17 +105,16 @@ const { DefaultMap } = ExtensionUtils;
 let ACTORS = {
   AudioPlayback: {
     parent: {
       moduleURI: "resource://gre/actors/AudioPlaybackParent.jsm",
     },
 
     child: {
       moduleURI: "resource://gre/actors/AudioPlaybackChild.jsm",
-      messages: ["AudioPlayback"],
       observers: ["audio-playback"],
     },
 
     allFrames: true,
   },
 
   Autoplay: {
     parent: {
@@ -191,30 +190,24 @@ let ACTORS = {
     },
 
     allFrames: true,
   },
 
   Zoom: {
     parent: {
       moduleURI: "resource://gre/actors/ZoomParent.jsm",
-      messages: [
-        "FullZoomChange",
-        "TextZoomChange",
-        "ZoomChangeUsingMouseWheel",
-      ],
     },
     child: {
       moduleURI: "resource://gre/actors/ZoomChild.jsm",
       events: {
         FullZoomChange: {},
         TextZoomChange: {},
         ZoomChangeUsingMouseWheel: {},
       },
-      messages: ["FullZoom", "TextZoom"],
     },
 
     allFrames: true,
   },
 
   UAWidgets: {
     child: {
       moduleURI: "resource://gre/actors/UAWidgetsChild.jsm",