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diff --git a/views/controls/native/native_view_host_wrapper.h b/views/controls/native/native_view_host_wrapper.h
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+// Copyright (c) 2009 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.
+
+#ifndef VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_WRAPPER_H_
+#define VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_WRAPPER_H_
+
+namespace views {
+
+class NativeViewHost;
+
+// An interface that implemented by an object that wraps a gfx::NativeView on
+// a specific platform, used to perform platform specific operations on that
+// native view when attached, detached, moved and sized.
+class NativeViewHostWrapper {
+ public:
+  // Called when a gfx::NativeView has been attached to the associated
+  // NativeViewHost, allowing the wrapper to perform platform-specific
+  // initialization.
+  virtual void NativeViewAttached() = 0;
+
+  // Called before the attached gfx::NativeView is detached from the
+  // NativeViewHost, allowing the wrapper to perform platform-specific
+  // cleanup.
+  virtual void NativeViewDetaching() = 0;
+
+  // Called when our associated NativeViewHost is added to a View hierarchy
+  // rooted at a valid Widget.
+  virtual void AddedToWidget() = 0;
+
+  // Called when our associated NativeViewHost is removed from a View hierarchy
+  // rooted at a valid Widget.
+  virtual void RemovedFromWidget() = 0;
+
+  // Installs a clip on the gfx::NativeView.
+  virtual void InstallClip(int x, int y, int w, int h) = 0;
+
+  // Whether or not a clip has been installed on the wrapped gfx::NativeView.
+  virtual bool HasInstalledClip() = 0;
+
+  // Removes the clip installed on the gfx::NativeView by way of InstallClip.
+  virtual void UninstallClip() = 0;
+
+  // Shows the gfx::NativeView at the specified position (relative to the parent
+  // native view).
+  virtual void ShowWidget(int x, int y, int w, int h) = 0;
+
+  // Hides the gfx::NativeView. NOTE: this may be invoked when the native view
+  // is already hidden.
+  virtual void HideWidget() = 0;
+
+  // Sets focus to the gfx::NativeView.
+  virtual void SetFocus() = 0;
+
+  // Creates a platform-specific instance of an object implementing this
+  // interface.
+  static NativeViewHostWrapper* CreateWrapper(NativeViewHost* host);
+};
+
+}  // namespace views
+
+#endif  // VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_WRAPPER_H_