Devtools: [WIP] Implement enhanced devtools extension language APIs

Source/devtools/front_end/main/Main.js

Index: Source/devtools/front_end/main/Main.js
diff --git a/Source/devtools/front_end/main/Main.js b/Source/devtools/front_end/main/Main.js
index 44e480170a32f672ba88e5ef60439ab2f2db78c6..7294f411fb0e18854afb360595347b6ac5d6e00b 100644
--- a/Source/devtools/front_end/main/Main.js
+++ b/Source/devtools/front_end/main/Main.js
@@ -210,7 +210,7 @@ WebInspector.Main.prototype = {
         WebInspector.debuggerWorkspaceBinding = new WebInspector.DebuggerWorkspaceBinding(WebInspector.targetManager, WebInspector.workspace, WebInspector.networkMapping);
         WebInspector.fileSystemWorkspaceBinding = new WebInspector.FileSystemWorkspaceBinding(WebInspector.isolatedFileSystemManager, WebInspector.workspace, WebInspector.networkMapping);
         WebInspector.breakpointManager = new WebInspector.BreakpointManager(null, WebInspector.workspace, WebInspector.networkMapping, WebInspector.targetManager, WebInspector.debuggerWorkspaceBinding);
-        WebInspector.extensionServer = new WebInspector.ExtensionServer();
+        WebInspector.extensionServer = new WebInspector.ExtensionServer(new WebInspector.ExtensionServer.UIDelegateImpl());
 
         new WebInspector.OverlayController();
         new WebInspector.ContentScriptProjectDecorator();
@@ -844,4 +844,25 @@ WebInspector.WorkerTerminatedScreen.prototype = {
     __proto__: WebInspector.HelpScreen.prototype
 }
 
+/**
+ * @constructor
+ * @implements {WebInspector.ExtensionServer.UIDelegate}
+ */
+WebInspector.ExtensionServer.UIDelegateImpl = function() {}
+WebInspector.ExtensionServer.UIDelegateImpl.prototype = {
+
+    /**
+     * @override
+     * @param {!Array<string>} mimes
+     * @param {?} mode
+     */
+     addSimpleCodeMirrorMode: function(mimes, mode) {
+         self.runtime.loadModulePromise("source_frame").then(function() { //also not autoloaded (Though TBH this could just add waiting ones on start, rather than loading it when we want to add one)
+            for (var i=0; i<mimes.length; i++) {
+                CodeMirror.defineSimpleMode(mimes[i], mode);
+            }
+         });
+     }
+}
+
 new WebInspector.Main();