Remove redundant getUrl handlers

ext/bg/js/search.js

@@ -238,17 +238,6 @@ class DisplaySearch extends Display {
         }
     }
 
-    onRuntimeMessage({action, params}, sender, callback) {
-        const handlers = DisplaySearch.runtimeMessageHandlers;
-        if (hasOwn(handlers, action)) {
-            const handler = handlers[action];
-            const result = handler(this, params);
-            callback(result);
-        } else {
-            return super.onRuntimeMessage({action, params}, sender, callback);
-        }
-    }
-
     initClipboardMonitor() {
         // ignore copy from search page
         window.addEventListener('copy', () => {
@@ -380,12 +369,6 @@ class DisplaySearch extends Display {
     }
 }
 
-DisplaySearch.runtimeMessageHandlers = {
-    getUrl: () => {
-        return {url: window.location.href};
-    }
-};
-
 DisplaySearch.onKeyDownIgnoreKeys = {
     'ANY_MOD': [
         'Tab', 'ArrowUp', 'ArrowDown', 'ArrowLeft', 'ArrowRight', 'PageDown', 'PageUp', 'Home', 'End',

ext/bg/js/settings/main.js

@@ -199,14 +199,11 @@ async function onOptionsUpdate({source}) {
     await formWrite(options);
 }
 
-function onMessage({action, params}, sender, callback) {
+function onMessage({action, params}) {
     switch (action) {
         case 'optionsUpdate':
             onOptionsUpdate(params);
             break;
-        case 'getUrl':
-            callback({url: window.location.href});
-            break;
     }
 }
 

ext/fg/js/frontend.js

@@ -201,6 +201,5 @@ Frontend._windowMessageHandlers = new Map([
 
 Frontend._runtimeMessageHandlers = new Map([
     ['optionsUpdate', (self) => self.updateOptions()],
-    ['popupSetVisibleOverride', (self, {visible}) => self.popup.setVisibleOverride(visible)],
+    ['popupSetVisibleOverride', (self, {visible}) => self.popup.setVisibleOverride(visible)]
-    ['getUrl', () => ({url: window.location.href})]
 ]);

ext/mixed/js/core.js

@@ -225,3 +225,21 @@ class EventDispatcher {
         return false;
     }
 }
+
+
+/*
+ * Default message handlers
+ */
+
+(() => {
+    function onMessage({action}, sender, callback) {
+        switch (action) {
+            case 'getUrl':
+                callback({url: window.location.href});
+                break;
+        }
+        return false;
+    }
+
+    chrome.runtime.onMessage.addListener(onMessage);
+})();