Update the native_viewport interface to allow specification of the surface configuration, currently…

examples/spinning_cube/spinning_cube_app.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 <stdio.h>
 #include <string>
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "examples/spinning_cube/gles2_client_impl.h"
@@ skipping 23 matching lines @@
 
   void Initialize(mojo::ApplicationImpl* app) override {
     app->ConnectToService("mojo:native_viewport_service", &viewport_);
     viewport_.set_error_handler(this);
 
     SetEventDispatcher();
 
     mojo::SizePtr size(mojo::Size::New());
     size->width = 800;
     size->height = 600;
+
+    auto requested_configuration = mojo::SurfaceConfiguration::New();
+    requested_configuration->depth_bits = 16;
+
     viewport_->Create(
-        size.Clone(),
+        size.Clone(), requested_configuration.Pass(),
         base::Bind(&SpinningCubeApp::OnMetricsChanged, base::Unretained(this)));
     viewport_->Show();
     mojo::ContextProviderPtr onscreen_context_provider;
     viewport_->GetContextProvider(GetProxy(&onscreen_context_provider));
 
     gles2_client_.reset(new GLES2ClientImpl(onscreen_context_provider.Pass()));
     gles2_client_->SetSize(*size);
   }
 
   void OnMetricsChanged(mojo::ViewportMetricsPtr metrics) {
@@ skipping 28 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(SpinningCubeApp);
 };
 
 }  // namespace examples
 
 MojoResult MojoMain(MojoHandle application_request) {
   mojo::ApplicationRunner runner(new examples::SpinningCubeApp);
   return runner.Run(application_request);
 }