MacViews: Implement NativeViewHostMac (take 3)

ui/views/controls/native/native_view_host_mac.h

+// 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.
+
+#ifndef UI_VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_MAC_H_
+#define UI_VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_MAC_H_
+
+#include "base/macros.h"
+#include "ui/views/controls/native/native_view_host_wrapper.h"
+#include "ui/views/views_export.h"
+
+namespace views {
+
+class NativeViewHost;
+
+// Mac implementation of NativeViewHostWrapper.
+class VIEWS_EXPORT NativeViewHostMac : public NativeViewHostWrapper {
+ public:
+  explicit NativeViewHostMac(NativeViewHost* host);
+  virtual ~NativeViewHostMac();
+
+  // Overridden from NativeViewHostWrapper:
+  virtual void AttachNativeView() OVERRIDE;
+  virtual void NativeViewDetaching(bool destroyed) OVERRIDE;
+  virtual void AddedToWidget() OVERRIDE;
+  virtual void RemovedFromWidget() OVERRIDE;
+  virtual void InstallClip(int x, int y, int w, int h) OVERRIDE;
+  virtual bool HasInstalledClip() OVERRIDE;
+  virtual void UninstallClip() OVERRIDE;
+  virtual void ShowWidget(int x, int y, int w, int h) OVERRIDE;
+  virtual void HideWidget() OVERRIDE;
+  virtual void SetFocus() OVERRIDE;
+  virtual gfx::NativeViewAccessible GetNativeViewAccessible() OVERRIDE;
+  virtual gfx::NativeCursor GetCursor(int x, int y) OVERRIDE;
+
+ private:
+  // Our associated NativeViewHost. Owns this.
+  NativeViewHost* host_;
+
+  DISALLOW_COPY_AND_ASSIGN(NativeViewHostMac);
+};
+
+}  // namespace views
+
+#endif  // UI_VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_AURA_H_