Make Mandoline shut down cleanly.

components/native_viewport/main.cc

Index: components/native_viewport/main.cc
diff --git a/components/native_viewport/main.cc b/components/native_viewport/main.cc
index 1ebfb270df26bcdf2c6dabb935e702953c9372db..5326ee14115041a915b285bf603f6f06d6d25a6d 100644
--- a/components/native_viewport/main.cc
+++ b/components/native_viewport/main.cc
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "base/bind.h"
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
@@ -16,6 +17,7 @@
 #include "third_party/mojo/src/mojo/public/cpp/application/application_impl.h"
 #include "third_party/mojo/src/mojo/public/cpp/application/interface_factory_impl.h"
 #include "ui/events/event_switches.h"
+#include "ui/events/platform/platform_event_source.h"
 #include "ui/gl/gl_surface.h"
 
 using mojo::ApplicationConnection;
@@ -34,6 +36,7 @@ class NativeViewportAppDelegate : public mojo::ApplicationDelegate,
  private:
   // mojo::ApplicationDelegate implementation.
   void Initialize(mojo::ApplicationImpl* application) override {
+    event_source_ = ui::PlatformEventSource::CreateDefault();
     tracing_.Initialize(application);
 
     base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
@@ -57,7 +60,10 @@ class NativeViewportAppDelegate : public mojo::ApplicationDelegate,
               mojo::InterfaceRequest<NativeViewport> request) override {
     if (!gpu_state_.get())
       gpu_state_ = new gles2::GpuState;
-    new NativeViewportImpl(is_headless_, gpu_state_, request.Pass());
+    new NativeViewportImpl(is_headless_,
+                           gpu_state_,
+                           request.Pass(),
+                           app_lifetime_helper_.CreateAppRefCount());
   }
 
   // mojo::InterfaceFactory<Gpu> implementation.
@@ -69,8 +75,10 @@ class NativeViewportAppDelegate : public mojo::ApplicationDelegate,
   }
 
   scoped_refptr<gles2::GpuState> gpu_state_;
+  scoped_ptr<ui::PlatformEventSource> event_source_;
   bool is_headless_;
   mojo::TracingImpl tracing_;
+  mojo::AppLifetimeHelper app_lifetime_helper_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeViewportAppDelegate);
 };