Mojo: Move public C system header files to mojo/public/c/system/.

mojo/examples/compositor_app/compositor_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/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "mojo/examples/compositor_app/compositor_host.h"
 #include "mojo/public/bindings/allocation_scope.h"
 #include "mojo/public/bindings/remote_ptr.h"
+#include "mojo/public/c/system/core.h"
+#include "mojo/public/c/system/macros.h"
 #include "mojo/public/gles2/gles2_cpp.h"
 #include "mojo/public/shell/application.h"
 #include "mojo/public/shell/shell.mojom.h"
-#include "mojo/public/system/core.h"
-#include "mojo/public/system/macros.h"
 #include "mojo/services/native_viewport/geometry_conversions.h"
 #include "mojo/services/native_viewport/native_viewport.mojom.h"
 #include "ui/gfx/rect.h"
 
 #if defined(WIN32)
 #if !defined(CDECL)
 #define CDECL __cdecl
 #endif
 #define SAMPLE_APP_EXPORT __declspec(dllexport)
 #else
@@ skipping 51 matching lines @@
 
 extern "C" SAMPLE_APP_EXPORT MojoResult CDECL MojoMain(
     MojoHandle shell_handle) {
   base::MessageLoop loop;
   mojo::GLES2Initializer gles2;
 
   mojo::examples::SampleApp app(shell_handle);
   loop.Run();
   return MOJO_RESULT_OK;
 }