Add support for AMD to the extensions module system.

chrome/test/base/module_system_test.h

Index: chrome/test/base/module_system_test.h
diff --git a/chrome/test/base/module_system_test.h b/chrome/test/base/module_system_test.h
index 8402d57b39e2e74921ffd3a11797cca91045dd74..0abf71bb37783638eec2e8ec110433fc82d0a540 100644
--- a/chrome/test/base/module_system_test.h
+++ b/chrome/test/base/module_system_test.h
@@ -8,6 +8,8 @@
 #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"
 
@@ -56,7 +58,8 @@ class ModuleSystemTest : public testing::Test {
   // 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;