Introduce InterfaceEndpointClient(IEC), InterfaceEndpointHandle and

content/renderer/mojo_context_state.cc

Index: content/renderer/mojo_context_state.cc
diff --git a/content/renderer/mojo_context_state.cc b/content/renderer/mojo_context_state.cc
index 381b4455c8acf86ef11e33a688447d22f568c174..e4dc3aa8444e20dffd4e8830688fe5c4d6f0e2a9 100644
--- a/content/renderer/mojo_context_state.cc
+++ b/content/renderer/mojo_context_state.cc
@@ -75,6 +75,11 @@ scoped_refptr<base::RefCountedMemory> GetBuiltinModuleData(
       {mojo::kRouterModuleName, IDR_MOJO_ROUTER_JS},
       {mojo::kUnicodeModuleName, IDR_MOJO_UNICODE_JS},
       {mojo::kValidatorModuleName, IDR_MOJO_VALIDATOR_JS},
+      {mojo::kPipeControlMessagesMojom, IDR_MOJO_PIPE_CONTROL_MESSAGES_MOJOM_JS},
+      {mojo::kInterfaceEndpointClientModuleName, IDR_MOJO_INTERFACE_ENDPOINT_CLIENT_JS},
+      {mojo::kInterfaceEndpointHandleModuleName, IDR_MOJO_INTERFACE_ENDPOINT_HANDLE_JS},
+      {mojo::kPipeControlMessageHandlerModuleName, IDR_MOJO_PIPE_CONTROL_MESSAGE_HANDLER_JS},
+      {mojo::kPipeControlMessageProxyModuleName, IDR_MOJO_PIPE_CONTROL_MESSAGE_PROXY_JS},
   };
 
   std::unique_ptr<ModuleSourceMap>& module_sources = g_module_sources.Get();