Introduce NetworkDelegate's implementation in extensions.

extensions/shell/browser/shell_content_browser_client.cc

Index: extensions/shell/browser/shell_content_browser_client.cc
diff --git a/extensions/shell/browser/shell_content_browser_client.cc b/extensions/shell/browser/shell_content_browser_client.cc
index e4df6fb5c20a4261e6f7ca93c7a7f4a417528861..e5da54bf0b7779737d611e473560da62bbd5abbb 100644
--- a/extensions/shell/browser/shell_content_browser_client.cc
+++ b/extensions/shell/browser/shell_content_browser_client.cc
@@ -113,9 +113,8 @@ net::URLRequestContextGetter* ShellContentBrowserClient::CreateRequestContext(
       linked_ptr<net::URLRequestJobFactory::ProtocolHandler>(
           CreateExtensionProtocolHandler(false /* is_incognito */,
                                          extension_info_map));
-  // Let content::ShellBrowserContext handle the rest of the setup.
   return browser_main_parts_->browser_context()->CreateRequestContext(
-      protocol_handlers, request_interceptors.Pass());
+      protocol_handlers, request_interceptors.Pass(), extension_info_map);
 }
 
 bool ShellContentBrowserClient::IsHandledURL(const GURL& url) {