DevTools: remove extra indirections from how extension API is built

third_party/WebKit/Source/devtools/front_end/extensions/ExtensionServer.js

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 760 matching lines @@
 
         try {
             var originMatch = urlOriginRegExp.exec(startPage);
             if (!originMatch) {
                 console.error("Skipping extension with invalid URL: " + startPage);
                 return false;
             }
             var extensionOrigin = originMatch[1];
             if (!this._registeredExtensions[extensionOrigin]) {
                 // See ExtensionAPI.js for details.
-                InspectorFrontendHost.setInjectedScriptForOrigin(extensionOrigin, buildExtensionAPIInjectedScript(extensionInfo, this._inspectedTabId, WebInspector.themeSupport.themeName()));
+                var injectedAPI = buildExtensionAPIInjectedScript(extensionInfo, this._inspectedTabId, WebInspector.themeSupport.themeName(), WebInspector.extensionServer["_extensionAPITestHook"]);
+                InspectorFrontendHost.setInjectedScriptForOrigin(extensionOrigin, injectedAPI);
                 this._registeredExtensions[extensionOrigin] = { name: name };
             }
             var iframe = createElement("iframe");
             iframe.src = startPage;
             iframe.style.display = "none";
             document.body.appendChild(iframe);  // Only for main window.
         } catch (e) {
             console.error("Failed to initialize extension " + startPage + ":" + e);
             return false;
         }
@@ skipping 300 matching lines @@
 /**
  * @typedef {{code: string, description: string, details: !Array.<*>}}
  */
 WebInspector.ExtensionStatus.Record;
 
 WebInspector.extensionAPI = {};
 defineCommonExtensionSymbols(WebInspector.extensionAPI);
 
 /** @type {!WebInspector.ExtensionServer} */
 WebInspector.extensionServer;