Split surface id and simplify connecting to surfaces service

services/fake_surfaces/fake_surfaces_service_application.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 "services/fake_surfaces/fake_surfaces_service_application.h"
 
 #include "mojo/application/application_runner_chromium.h"
 #include "mojo/common/tracing_impl.h"
 #include "mojo/public/c/system/main.h"
 #include "mojo/public/cpp/application/application_connection.h"
 #include "mojo/services/surfaces/public/interfaces/surfaces.mojom.h"
 
 using mojo::InterfaceRequest;
 
 namespace fake_surfaces {
 
 class FakeSurfaceImpl : public mojo::Surface {
  public:
   FakeSurfaceImpl(uint32_t id_namespace, mojo::SurfacePtr* ptr)
-      : binding_(this, ptr) {}
+      : binding_(this, ptr) {
+    binding_.client()->SetIdNamespace(id_namespace);
+  }
   ~FakeSurfaceImpl() override {}
 
   // mojo::Surface implementation.
-  void CreateSurface(mojo::SurfaceIdPtr id, mojo::SizePtr size) override {}
+  void CreateSurface(mojo::SurfaceIdPtr id) override {}
 
   void SubmitFrame(mojo::SurfaceIdPtr id,
                    mojo::FramePtr frame,
                    const mojo::Closure& callback) override {
     callback.Run();
     if (frame->resources.size() == 0u)
       return;
     mojo::Array<mojo::ReturnedResourcePtr> returned;
     returned.resize(frame->resources.size());
     for (size_t i = 0; i < frame->resources.size(); ++i) {
@@ skipping 70 matching lines @@
   new FakeSurfacesServiceImpl(&next_id_namespace_, request.Pass());
 }
 
 }  // namespace fake_surfaces
 
 MojoResult MojoMain(MojoHandle shell_handle) {
   mojo::ApplicationRunnerChromium runner(
       new fake_surfaces::FakeSurfacesServiceApplication);
   return runner.Run(shell_handle);
 }