MacViews: Change Widget context type to NativeWindow

ui/views/examples/examples_with_content_main_exe.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 "base/bind.h"
 #include "content/public/browser/browser_context.h"
 #include "ui/views/examples/examples_window_with_content.h"
 #include "ui/views_content_client/views_content_client.h"
 
 #if defined(OS_WIN)
 #include "content/public/app/startup_helper_win.h"
 #include "sandbox/win/src/sandbox_types.h"
 #endif
 
 namespace {
 
 void ShowContentExampleWindow(content::BrowserContext* browser_context,
-                              gfx::NativeView window_context) {
+                              gfx::NativeWindow window_context) {
   views::examples::ShowExamplesWindowWithContent(views::examples::QUIT_ON_CLOSE,
                                                  browser_context,
                                                  window_context);
 
   // These lines serve no purpose other than to introduce an explicit content
   // dependency. If the main executable doesn't have this dependency, the linker
   // has more flexibility to reorder library dependencies in a shared component
   // build. On linux, this can cause libc to appear before libcontent in the
   // dlsym search path, which breaks (usually valid) assumptions made in
   // sandbox::InitLibcUrandomOverrides(). See http://crbug.com/374712.
@@ skipping 11 matching lines @@
   content::InitializeSandboxInfo(&sandbox_info);
   ui::ViewsContentClient views_content_client(instance, &sandbox_info);
 #else
 int main(int argc, const char** argv) {
   ui::ViewsContentClient views_content_client(argc, argv);
 #endif
 
   views_content_client.set_task(base::Bind(&ShowContentExampleWindow));
   return views_content_client.RunMain();
 }