Moves mojo.define -> gin.define.

third_party/WebKit/LayoutTests/resources/mojo-helpers.js

Index: third_party/WebKit/LayoutTests/resources/mojo-helpers.js
diff --git a/third_party/WebKit/LayoutTests/resources/mojo-helpers.js b/third_party/WebKit/LayoutTests/resources/mojo-helpers.js
index 481ed60b8f1c0a5b7a640668cc992b263e75a7b4..92ddd8d5ae3e7c07dbd8dcf2bdcbf9ab341a1a46 100644
--- a/third_party/WebKit/LayoutTests/resources/mojo-helpers.js
+++ b/third_party/WebKit/LayoutTests/resources/mojo-helpers.js
@@ -12,10 +12,10 @@ let define = (function(){
   return function(name, deps, factory) {
     let promise = moduleCache.get(name);
     if (promise === undefined) {
-      // This promise must be cached as mojo.define will only call the factory
+      // This promise must be cached as gin.define will only call the factory
       // function the first time the module is defined.
       promise = new Promise(resolve => {
-        mojo.define(name, deps, (...modules) => {
+        gin.define(name, deps, (...modules) => {
           let result = factory(...modules);
           resolve(result);
           return result;