Don't send unnecessary ExtensionMsg_Loaded IPCs.

chrome/renderer/extensions/renderer_permissions_policy_delegate_unittest.cc

 // Copyright 2013 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 "base/command_line.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.h"
 #include "chrome/renderer/extensions/renderer_permissions_policy_delegate.h"
 #include "content/public/test/mock_render_process_host.h"
 #include "content/public/test/mock_render_thread.h"
@@ skipping 56 matching lines @@
   std::string error;
 
   EXPECT_TRUE(extension->permissions_data()->CanAccessPage(
       extension.get(), kAnyUrl, kAnyUrl, -1, -1, &error))
       << error;
 
   // Pretend we are in the webstore process. We should not be able to execute
   // script.
   scoped_refptr<const Extension> webstore_extension(
       CreateTestExtension(extensions::kWebStoreAppId));
-  extension_dispatcher_->OnLoadedInternal(webstore_extension);
+  extension_dispatcher_->LoadExtensionForTest(webstore_extension.get());
   extension_dispatcher_->OnActivateExtension(extensions::kWebStoreAppId);
   EXPECT_FALSE(extension->permissions_data()->CanAccessPage(
       extension.get(), kAnyUrl, kAnyUrl, -1, -1, &error))
       << error;
 }
 
 }  // namespace extensions