Extract NativeAppWindow from src/extensions

components/native_app_window/native_app_window.h

Index: components/native_app_window/native_app_window.h
diff --git a/extensions/browser/app_window/native_app_window.h b/components/native_app_window/native_app_window.h
similarity index 89%
copy from extensions/browser/app_window/native_app_window.h
copy to components/native_app_window/native_app_window.h
index b5007dde4f80b26c4be88fe484f5c7b6e98d4853..68a8e6bb80df51b352a3e79ffbf1d05c0437a7a3 100644
--- a/extensions/browser/app_window/native_app_window.h
+++ b/components/native_app_window/native_app_window.h
@@ -2,12 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef EXTENSIONS_BROWSER_APP_WINDOW_NATIVE_APP_WINDOW_H_
-#define EXTENSIONS_BROWSER_APP_WINDOW_NATIVE_APP_WINDOW_H_
+#ifndef COMPONENTS_NATIVE_APP_WINDOW_NATIVE_APP_WINDOW_H_
+#define COMPONENTS_NATIVE_APP_WINDOW_NATIVE_APP_WINDOW_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
+#include "components/native_app_window/native_app_window_export.h"
 #include "components/web_modal/web_contents_modal_dialog_host.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/base/base_window.h"
@@ -17,15 +18,16 @@ namespace content {
 struct NativeWebKeyboardEvent;
 }
 
-namespace extensions {
+namespace native_app_window {
 
 struct DraggableRegion;
 
 // This is an interface to a native implementation of a app window, used for
 // new-style packaged apps. App windows contain a web contents, but no tabs
 // or URL bar.
-class NativeAppWindow : public ui::BaseWindow,
-                        public web_modal::WebContentsModalDialogHost {
+class NATIVE_APP_WINDOW_EXPORT NativeAppWindow
+    : public ui::BaseWindow,
+      public web_modal::WebContentsModalDialogHost {
  public:
   // Sets whether the window is fullscreen and the type of fullscreen.
   // |fullscreen_types| is a bit field of AppWindow::FullscreenType.
@@ -98,10 +100,8 @@ class NativeAppWindow : public ui::BaseWindow,
   // Returns false if the underlying native window ignores alpha transparency
   // when compositing.
   virtual bool CanHaveAlphaEnabled() const = 0;
-
-  virtual ~NativeAppWindow() {}
 };
 
-}  // namespace extensions
+}  // namespace native_app_window
 
-#endif  // EXTENSIONS_BROWSER_APP_WINDOW_NATIVE_APP_WINDOW_H_
+#endif  // COMPONENTS_NATIVE_APP_WINDOW_NATIVE_APP_WINDOW_H_