Move NativeAppWindow to extensions

chrome/browser/ui/cocoa/apps/native_app_window_cocoa.h

Index: chrome/browser/ui/cocoa/apps/native_app_window_cocoa.h
diff --git a/chrome/browser/ui/cocoa/apps/native_app_window_cocoa.h b/chrome/browser/ui/cocoa/apps/native_app_window_cocoa.h
index 230d228bbc15e879d5de9f4cd9473445083e7a32..5d8eab7cd62ade17a8ce800a0ac7730b5623d14d 100644
--- a/chrome/browser/ui/cocoa/apps/native_app_window_cocoa.h
+++ b/chrome/browser/ui/cocoa/apps/native_app_window_cocoa.h
@@ -8,11 +8,12 @@
 #import <Cocoa/Cocoa.h>
 #include <vector>
 
-#include "apps/ui/native_app_window.h"
+#include "apps/app_window.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
 #import "chrome/browser/ui/cocoa/browser_command_executor.h"
 #include "content/public/browser/web_contents_observer.h"
+#include "extensions/browser/app_window/native_app_window.h"
 #include "extensions/browser/app_window/size_constraints.h"
 #include "extensions/common/draggable_region.h"
 #include "ui/base/accelerators/accelerator_manager.h"
@@ -47,7 +48,7 @@ class SkRegion;
 @end
 
 // Cocoa bridge to AppWindow.
-class NativeAppWindowCocoa : public apps::NativeAppWindow,
+class NativeAppWindowCocoa : public extensions::NativeAppWindow,
                              public content::WebContentsObserver {
  public:
   NativeAppWindowCocoa(apps::AppWindow* app_window,