Add support for writing unit tests for Mojo-backed apps/extensions APIs.

extensions/renderer/module_system_test.cc

 // Copyright 2014 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.
 
 #include "extensions/renderer/module_system_test.h"
 
 #include <map>
 #include <string>
 
 #include "base/callback.h"
@@ skipping 113 matching lines @@
 ModuleSystemTestEnvironment::ModuleSystemTestEnvironment(v8::Isolate* isolate)
     : isolate_(isolate),
       context_holder_(new gin::ContextHolder(isolate_)),
       handle_scope_(isolate_),
       source_map_(new StringSourceMap()) {
   context_holder_->SetContext(v8::Context::New(
       isolate, g_v8_extension_configurator.Get().GetConfiguration()));
   context_.reset(new ScriptContext(context_holder_->context(),
                                    NULL,  // WebFrame
                                    NULL,  // Extension
-                                   Feature::UNSPECIFIED_CONTEXT));
+                                   Feature::BLESSED_EXTENSION_CONTEXT));
   context_->v8_context()->Enter();
   assert_natives_ = new AssertNatives(context_.get());
 
   {
     scoped_ptr<ModuleSystem> module_system(
         new ModuleSystem(context_.get(), source_map_.get()));
     context_->set_module_system(module_system.Pass());
   }
   ModuleSystem* module_system = context_->module_system();
   module_system->RegisterNativeHandler(
@@ skipping 84 matching lines @@
 
 void ModuleSystemTest::ExpectNoAssertionsMade() {
   should_assertions_be_made_ = false;
 }
 
 void ModuleSystemTest::RunResolvedPromises() {
   isolate_->RunMicrotasks();
 }
 
 }  // namespace extensions