Add support for using AMD modules from extensions modules.

chrome/test/base/module_system_test.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_TEST_BASE_MODULE_SYSTEM_TEST_H_
 #define CHROME_TEST_BASE_MODULE_SYSTEM_TEST_H_
 
 #include "chrome/renderer/extensions/chrome_v8_context.h"
 #include "extensions/renderer/module_system.h"
 #include "extensions/renderer/scoped_persistent.h"
+#include "gin/public/context_holder.h"
+#include "gin/public/isolate_holder.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "v8/include/v8.h"
 
 // Test fixture for testing JS that makes use of the module system.
 //
 // Typically tests will look like:
 //
 // TEST_F(MyModuleSystemTest, TestStuff) {
 //   ModuleSystem::NativesEnabledScope natives_enabled(module_system_.get());
 //   RegisterModule("test", "requireNative('assert').AssertTrue(true);");
@@ skipping 28 matching lines @@
   void RegisterTestFile(const std::string& module_name,
                         const std::string& file_name);
 
   // Make the test fail if any asserts are called. By default a test will fail
   // if no asserts are called.
   void ExpectNoAssertionsMade();
 
   // Create an empty object in the global scope with name |name|.
   v8::Handle<v8::Object> CreateGlobal(const std::string& name);
 
-  v8::Isolate* isolate_;
+  gin::IsolateHolder isolate_holder_;
+  gin::ContextHolder context_holder_;
   v8::HandleScope handle_scope_;
   scoped_ptr<extensions::ChromeV8Context> context_;
   class AssertNatives;
   AssertNatives* assert_natives_;
   class StringSourceMap;
   scoped_ptr<StringSourceMap> source_map_;
   bool should_assertions_be_made_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ModuleSystemTest);
 };
 
 #endif  // CHROME_TEST_BASE_MODULE_SYSTEM_TEST_H_